ASE L4 Practice Test Welcome to your ASE L4 Practice Test 1. ASE L4: General ADAS Service and Diagnosis If a vehicle's adaptive cruise control system intermittently fails to maintain set speed or follow distance, which of the following is the LEAST likely cause? A. Faulty radar sensor B. Malfunctioning vehicle speed sensor C. Incorrectly installed windshield wipers D. Software glitch in the control module None 2. ASE L4: General ADAS Service and Diagnosis What is the purpose of performing a 'health check' scan before and after ADAS service and calibration? A. To document the repair process for customer records. B. To ensure all vehicle systems are functioning correctly and to confirm that no new faults have been introduced during the service. C. To reset the vehicle's oil life monitor. D. To check for software updates for the infotainment system. None 3. ASE L4: General ADAS Service and Diagnosis When a forward-facing camera used for ADAS is being calibrated, what environmental condition could most significantly affect the calibration process? A. Barometric pressure B. Relative humidity C. Ambient light intensity D. Atmospheric temperature None 4. ASE L4: General ADAS Service and Diagnosis A vehicle with a park assist system is inaccurately detecting obstacles, leading to false alerts. Which of the following steps is critical before component replacement? A. Conducting a battery load test B. Ensuring all ultrasonic sensors are clean and undamaged C. Checking the alignment of the headlamps D. Verifying the correct inflation of the spare tire None 5. ASE L4: General ADAS Service and Diagnosis A vehicle equipped with a 360-degree camera system is experiencing issues with the stitching of images, leading to inaccurate representation of surrounding space. Before replacing any camera, what should be the technician's primary diagnostic step? A. Check for updates to the vehicle's multimedia system. B. Ensure all cameras are clean, correctly oriented, and the lenses are undamaged. C. Reboot the vehicle's electrical system by disconnecting the battery. D. Perform a wheel alignment service. None 6. ASE L4: General ADAS Service and Diagnosis What is the potential impact of using non-OEM windshields on ADAS functionality? A. No impact, as long as the windshield is clear. B. Decreased radio reception. C. Incorrect ADAS operation due to altered optical properties. D. Improved ADAS operation due to better quality glass. None 7. ASE L4: General ADAS Service and Diagnosis A technician encounters an error message stating, "Lidar Sensor Temperature Out of Range," during a calibration process. What should be the technician's first course of action? A. Check the ambient temperature and compare it with the manufacturer's specified range for calibration. B. Replace the LIDAR sensor immediately. C. Ignore the error and continue with the calibration. D. Place a heating pad around the sensor to increase its temperature. None 8. ASE L4: General ADAS Service and Diagnosis An ADAS system that uses road sign recognition technology is failing to identify signs correctly. What would be the most relevant diagnostic step to take first? A. Inspect the camera lens for cleanliness and clarity. B. Test the vehicle's alternator for proper charging voltage. C. Update the GPS maps in the navigation system. D. Perform a wheel alignment on the vehicle. None 9. ASE L4: General ADAS Service and Diagnosis What is the primary purpose of conducting a preload stress test on ADAS mounting points after a collision repair? A. To check the paint thickness around the sensor area. B. To verify the rigidity of the vehicle's frame. C. To ensure that there is no additional stress affecting sensor alignment. D. To determine the torque specifications for the sensor mount bolts. None 10. ASE L4: General ADAS Service and Diagnosis What is a common requirement for the initialization procedure of a steering angle sensor in an ADAS-equipped vehicle? A. The fuel tank must be at least half full. B. The vehicle's battery should be disconnected for 30 minutes prior. C. The steering wheel must be positioned exactly straight ahead. D. The vehicle's tires should be rotated before the procedure. None 11. ASE L4: General ADAS Service and Diagnosis A technician is diagnosing an ADAS system that utilizes a LIDAR sensor. When verifying the functionality of the LIDAR sensor, what is a critical environmental factor that must be considered? A. Exterior noise levels B. Ambient air quality C. Level of ambient light D. Proximity to large metallic objects None 12. ASE L4: General ADAS Service and Diagnosis Which of the following conditions must be met for successful dynamic calibration of ADAS systems that require driving the vehicle as part of the procedure? A. The vehicle should have at least two passengers to simulate typical driving weight. B. The vehicle must be driven on a road with a variety of inclines and declines. C. Calibration must be performed under specific driving speeds and environmental conditions outlined by the manufacturer. D. The vehicle should be loaded with cargo to ensure suspension compression. None 13. ASE L4: General ADAS Service and Diagnosis A technician is unable to complete the static calibration process on a lane-keeping assistance system. Which of the following is NOT a potential reason for this failure? A. Inadequate lighting conditions in the service bay. B. Incorrect placement of the calibration targets. C. The battery voltage is slightly above the nominal value. D. Interference from reflective objects in the calibration area. None 14. ASE L4: General ADAS Service and Diagnosis A vehicle with ADAS is pulling to one side after a windshield replacement. The most likely cause is: A. Incorrect tire pressure. B. Faulty steering angle sensor. C. Misalignment of the front camera. D. Wheel alignment issue. None 15. ASE L4: General ADAS Service and Diagnosis During the calibration of a lane-keeping assist system, which factor is essential to check in the workshop environment? A. Ceiling height in the workshop B. Electromagnetic interference from other equipment C. Brightness of the workshop lighting D. Proximity to radio transmission towers None 16. ASE L4: General ADAS Service and Diagnosis In an ADAS-equipped vehicle, the blind-spot monitoring system is not detecting vehicles on the passenger side. Prior to component replacement, what should be checked first? A. The passenger side door speaker operation. B. The latest software updates for the infotainment system. C. The alignment and cleanliness of the passenger side radar or camera sensor. D. The battery voltage and charging system output. None 17. ASE L4: General ADAS Service and Diagnosis When calibrating the radar sensor of an ADAS, the most critical factor to consider is: A. Ambient temperature. B. Sensor mounting angle. C. The color of the vehicle's paint. D. The level of vehicle's coolant. None 18. ASE L4: General ADAS Service and Diagnosis During a test drive following ADAS service, a technician notices that the automatic emergency braking AEB system does not engage when expected. This could be due to: A. A misaligned rear-view mirror. B. A recently cleaned vehicle exterior. C. Depleted windshield washer fluid. D. Inaccurate calibration of the forward-facing radar. None 19. ASE L4: General ADAS Service and Diagnosis When a forward-facing ADAS camera is not aligning properly during static calibration, what uncommon but critical factor should be considered as a cause? A. The type of headlight bulbs used. B. The cleanliness of the windshield inside and out. C. The amount of fuel in the vehicle's tank. D. The wear pattern of the front tires. None 20. ASE L4: General ADAS Service and Diagnosis In vehicles equipped with ADAS, technician A states that wheel alignment is critical because it can affect the thrust angle and, consequently, the radar sensor's aiming. Technician B states that wheel alignment has no impact on ADAS calibration. Who is correct? A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B None 21. ASE L4: General ADAS Service and Diagnosis When performing a post-repair calibration on a vehicle's ADAS, the technician must ensure the vehicle's fuel tank is: A. Empty to prevent excess weight. B. At least half full to simulate a common driving condition. C. Full to provide maximum stability. D. Level is not significant for ADAS calibration. None 22. ASE L4: General ADAS Service and Diagnosis What is the most appropriate initial action when encountering a persistent fault code indicating "Radar Sensor Blockage" after multiple attempts to recalibrate? A. Clear the fault code and attempt recalibration again. B. Physically inspect the radar sensor for obstructions, damage, or misalignment. C. Replace the radar sensor with a new unit. D. Test drive the vehicle to see if the code clears on its own. None 23. ASE L4: General ADAS Service and Diagnosis A technician receives an error during the dynamic calibration of a lane departure warning system. What should be the first step in troubleshooting? A. Immediately replace the lane departure warning camera. B. Check for software updates for the vehicle's ECU. C. Inspect the vehicle's alignment and tire conditions. D. Drive the vehicle at a different time of day when traffic patterns have changed. None 24. ASE L4: General ADAS Service and Diagnosis When troubleshooting an ADAS system, a technician finds a fault code that does not have a detailed troubleshooting procedure in the service manual. What should be the technician's next step? A. Clear the code and see if it returns. B. Use an OEM-specific diagnostic tool for further investigation. C. Replace the ADAS control module. D. Refer to an online forum for advice. None 25. ASE L4: General ADAS Service and Diagnosis After replacing a front ADAS sensor, the new sensor fails to calibrate. Technician A says that paint thickness on the vehicle's bumper can affect sensor operation. Technician B says that only the sensor's orientation matters. Who is correct? A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B None 26. ASE L4: General ADAS Service and Diagnosis What is the key reason for ensuring the correct inflation of all tires before performing an ADAS calibration? A. To activate the tire pressure monitoring system (TPMS). B. To maintain proper ride height for sensor alignment. C. To reduce the tire noise for better sensor performance. D. To enhance the vehicle's fuel efficiency during calibration. None 27. ASE L4: General ADAS Service and Diagnosis When calibrating a surround-view monitoring system, what is the most critical condition that must be met to ensure proper functionality? A. The calibration area must be well-ventilated. B. The calibration surface must be flat and horizontal. C. The calibration must be done during daylight hours. D. The vehicle's engine must be at operating temperature. None 28. ASE L4: Camera-Based Systems Service and Diagnosis When a rear-view camera's image is distorted on the display, which of these checks is most relevant to address the issue? A. Ensuring that the vehicle's battery is fully charged B. Verifying the integrity and routing of the camera's video signal cable C. Checking the pressure of the rear tires D. Measuring the voltage drop across the rear defogger grid None 29. ASE L4: Camera-Based Systems Service and Diagnosis During calibration of a front-facing camera, the vehicle must be: A. On an incline to simulate various driving conditions. B. Placed in a service mode where ADAS features are disabled. C. Positioned on a level surface and in a well-lit area. D. In a state of battery charge conservation mode. None 30. ASE L4: Camera-Based Systems Service and Diagnosis A panoramic view system is displaying a black screen for one quadrant. What should the technician inspect first? A. The functionality of the central processing unit (CPU) of the system B. The specific camera providing the feed for that quadrant C. The entire vehicle's power supply system D. The integrity of the vehicle's chassis grounding system None 31. ASE L4: Camera-Based Systems Service and Diagnosis After a software update to a camera-based system, a technician notices a lag in the display response when the vehicle changes direction. What is the most likely cause? A. The update has introduced a new bug in the system. B. The display's resolution settings are not compatible with the update. C. The vehicle's steering angle sensor needs recalibration. D. There is a latency issue within the vehicle's CAN bus communication system. None 32. ASE L4: Camera-Based Systems Service and Diagnosis A technician is calibrating a front-facing camera and notices that the system cannot recognize lane markings consistently. What should be checked first for this issue? A. Alignment of the steering wheel B. Condition of the lane markings on the calibration track C. Brightness settings of the camera D. Wheel alignment of the vehicle None 33. ASE L4: Camera-Based Systems Service and Diagnosis In a camera-based system, if a dynamic calibration fails, which of the following should be the technician's initial step? A. Check the alignment of all four wheels. B. Ensure the camera's field of vision is not obstructed. C. Update the vehicle's ECU software. D. Replace the camera with an OEM part. None 34. ASE L4: Camera-Based Systems Service and Diagnosis A technician needs to replace a side-view camera. After installation, the camera must be: A. Synchronized with the opposite side camera. B. Programmed with the vehicle's VIN. C. Calibrated to the central ADAS controller. D. Secured with proprietary fasteners only. None 35. ASE L4: Camera-Based Systems Service and Diagnosis When troubleshooting a lane departure warning system, a technician finds that the system does not activate when it should. What could be a cause for this behavior? A. The system is set to a high sensitivity level. B. There is excessive play in the steering components. C. The vehicle is equipped with mismatched tire sizes. D. The windshield is dirty in the camera's area of view. None 36. ASE L4: Camera-Based Systems Service and Diagnosis A technician is unable to complete the static calibration of a camera system. What condition could prevent the completion of the static calibration process? A. Ambient temperature below the camera's operating range B. Calibration equipment not aligned properly with the vehicle's centerline C. Low tire tread depth on the front wheels D. Aftermarket window tint applied to the camera's field of view None 37. ASE L4: Camera-Based Systems Service and Diagnosis During a road test of a camera-based lane-keeping assist system, the vehicle does not maintain the lane on curves despite the system being engaged. What is the most likely cause? A. Incorrect tire pressure B. Malfunctioning electronic power steering C. Improper camera alignment D. Defective lane marking detection algorithm None 38. ASE L4: Camera-Based Systems Service and Diagnosis When replacing a camera-based system's control module, what is an essential step that must be performed after the physical installation is complete? A. Resetting the vehicle's trip computer B. Relearning the throttle position sensor C. Programming and calibrating the new module to the vehicle D. Bleeding the brake system None 39. ASE L4: Camera-Based Systems Service and Diagnosis When diagnosing a surround-view system malfunction, which of the following tools is essential for the technician to use? A. An oscilloscope to check camera signal waveforms B. A multimeter to verify the power supply voltage to each camera C. A diagnostic scan tool to read trouble codes from the ADAS module D. A paint thickness gauge to check for excessive bodywork None 40. ASE L4: Camera-Based Systems Service and Diagnosis What is the recommended procedure when a camera lens is partially obstructed by a permanent vehicle design, such as a spoiler or trim? A. Remove the obstructing vehicle part for clear camera vision. B. Calibrate the camera to work around the obstruction. C. Modify the obstructing part to improve camera visibility. D. Inform the customer that the obstruction is a design limitation. None 41. ASE L4: Camera-Based Systems Service and Diagnosis In a camera-based ADAS, what is the likely impact of installing an aftermarket windshield with a different refractive index than OEM? A. Decreased fuel efficiency B. Increased cabin noise levels C. Reduced braking performance D. Altered camera vision and accuracy None 42. ASE L4: Camera-Based Systems Service and Diagnosis What condition can result in the misalignment of a vehicle's ADAS cameras without physical damage to the cameras themselves? A. A weak car battery B. Changes in the suspension geometry C. A malfunctioning engine control module (ECM) D. Incorrect tire size fitted to the vehicle None 43. ASE L4: Camera-Based Systems Service and Diagnosis Which of the following diagnostics should be performed after a forward-facing camera has been replaced? A. Checking for proper wheel alignment B. Confirmation of headlight beam pattern C. Calibration of the camera to the vehicle's ADAS D. Airbag system diagnostic scan None 44. ASE L4: Camera-Based Systems Service and Diagnosis What is a crucial consideration when replacing a windshield affecting a camera-based ADAS? A. The color tint of the new windshield B. The thickness of the new windshield glass C. The acoustic properties of the new windshield D. The mounting angle of the camera bracket on the new windshield None 45. ASE L4: Camera-Based Systems Service and Diagnosis A vehicle's adaptive cruise control system intermittently fails to detect vehicles ahead. What camera-related issue should be inspected first? A. The camera's software version for updates B. The integrity of the camera's power supply C. The clarity of the camera's lens D. The mounting bracket's stability None 46. ASE L4: Camera-Based Systems Service and Diagnosis What is the most likely cause of a camera-based system providing intermittent function during heavy rain conditions? A. Inadequate wheel speed sensor input B. Hydrophobic coating degradation on the camera lens C. Faulty yaw rate sensor D. Low quality of windshield wiper blades None 47. ASE L4: Camera-Based Systems Service and Diagnosis If a vehicle equipped with a camera-based parking assist system is not recognizing obstacles consistently, which of the following is a likely cause? A. GPS signal interference B. Camera lens obscured by a transparent film C. Inoperative ultrasonic sensors D. Incorrect ambient light sensor data None 48. ASE L4: General ADAS Service and Diagnosis A technician needs to verify the horizontal alignment of a forward-facing radar sensor. What is the most accurate method to perform this task? A. Use a level on the vehicle's hood and align the sensor by eye. B. Apply an alignment sticker on the radar lens and use a laser tool. C. Employ a manufacturer-specific alignment jig and tool set. D. Compare the radar readings to those of a known good vehicle. None 49. ASE L4: RADAR-Based Systems Service and Diagnosis A customer complains that the radar-based collision mitigation system activates intermittently for no apparent reason. What should the technician inspect FIRST? A. Alignment of the steering system B. Firmware version of the vehicle's ECU C. Condition and positioning of the radar sensor D. The brake system's response times None 50. ASE L4: RADAR-Based Systems Service and Diagnosis What is a potential consequence of performing radar sensor calibration with incorrect vehicle loading? A. Improved fuel efficiency due to altered aerodynamics B. Increased tire wear on the front axle C. Misalignment of the radar sensor's detection zone D. Enhanced braking performance None 51. ASE L4: RADAR-Based Systems Service and Diagnosis A technician is diagnosing a fault in a radar-based blind-spot detection system. The system fails to alert when a vehicle is present in the blind spot. Which of the following is LEAST likely to be the cause? A. Faulty radar sensor B. Paint overspray on the bumper cover where the radar sensor is located C. The use of non-OEM wheels on the vehicle D. A damaged rear bumper None 52. ASE L4: RADAR-Based Systems Service and Diagnosis A technician observes that a radar-based adaptive cruise control system is unable to maintain the set speed or follow distance. What is the LEAST likely cause of this issue? A. Radar sensor misalignment B. Malfunctioning vehicle speed sensor C. Defective throttle actuator D. Upgraded LED headlights installed by the owner None 53. ASE L4: RADAR-Based Systems Service and Diagnosis When troubleshooting a radar-based automatic emergency braking AEB system that fails to engage when expected, what diagnostic step should be prioritized? A. Inspecting the condition of the brake pads B. Checking for obstructions in front of the radar sensor C. Verifying the alignment of the headlights D. Testing the anti-lock braking system (ABS) operation None 54. ASE L4: RADAR-Based Systems Service and Diagnosis When a technician is aligning a radar sensor for a lane departure warning system, which environmental condition could most significantly affect the accuracy of the calibration? A. High humidity B. Ambient noise C. Intense sunlight D. Wind speed None 55. ASE L4: RADAR-Based Systems Service and Diagnosis Which of the following procedures is critical after replacing a radar sensor on a vehicle? A. Recharging the air conditioning system B. Calibration of the radar sensor C. Replacement of the vehicle's battery D. Alignment of the wheels None 56. ASE L4: RADAR-Based Systems Service and Diagnosis During a test drive of a vehicle with a radar-based collision avoidance system, the system fails to provide a warning when approaching a stationary object at low speed. Which of the following is the MOST likely cause? A. The brake fluid is at minimum level. B. The system is designed to not warn at low speeds. C. There is a high level of road surface reflection. D. The radar sensor is partially covered by a bumper sticker. None 57. ASE L4: RADAR-Based Systems Service and Diagnosis What is the typical purpose of a "notch filter" used in conjunction with radar systems in vehicles? A. To increase the frequency of the radar signal B. To reduce interference from other vehicle systems C. To amplify the return signal for better detection D. To enhance the radar signal's penetration in bad weather None 58. ASE L4: RADAR-Based Systems Service and Diagnosis During a radar sensor calibration, a technician finds that the radar unit cannot be calibrated successfully. What is the MOST likely reason? A. The calibration area has a slight incline. B. The vehicle's battery is at 75% charge. C. There is a new, aftermarket front grille installed. D. The tire pressure is 5 psi below the recommendation. None 59. ASE L4: RADAR-Based Systems Service and Diagnosis If a vehicle equipped with a radar-based adaptive cruise control ACC system has been lifted for wheel service, what step must be taken before the ACC system can be expected to operate accurately? A. The vehicle must be driven for at least 10 miles at highway speeds. B. The radar sensor must undergo a self-test routine. C. A dynamic calibration of the radar sensor must be performed. D. The vehicle must be allowed to rest on its suspension for a minimum of 30 minutes. None 60. ASE L4: RADAR-Based Systems Service and Diagnosis What is a common requirement for the proper operation of a radar-based forward collision warning system? A. The vehicle must have a full tank of fuel. B. There must be a clear line of sight for the radar sensor. C. The vehicle's tires must be rotated before system activation. D. The exterior lights must be on, even in daylight conditions. None 61. ASE L4: RADAR-Based Systems Service and Diagnosis When diagnosing a radar-based adaptive cruise control system, which condition could cause the system to reduce vehicle speed unnecessarily? A. Heavy traffic in adjacent lanes B. Low ambient temperature C. A misaligned front wheel D. High humidity conditions None 62. ASE L4: RADAR-Based Systems Service and Diagnosis What is the correct procedure after installing a new radar sensor for a blind-spot monitoring system? A. Perform an all-wheel alignment. B. Engage and disengage the parking brake three times. C. Clear any stored trouble codes from the system. D. Conduct a stationary calibration of the new sensor. None 63. ASE L4: RADAR-Based Systems Service and Diagnosis When diagnosing a radar-based system, which of the following diagnostic tools is essential for confirming the radar wave pattern and strength? A. A multimeter B. A radar sensor tester C. An oscilloscope D. A scan tool with live data capability None 64. ASE L4: RADAR-Based Systems Service and Diagnosis What could cause a radar-based system to fail only during long-distance drives? A. Overheating of the radar sensor B. The automatic transmission fluid reaching high temperatures C. Activation of the vehicle's fuel-saving mode D. Gradual decrease in engine oil level None 65. ASE L4: RADAR-Based Systems Service and Diagnosis In a radar-based lane keep assist system, what could cause the system to inaccurately detect lane markings and lead to unnecessary corrective steering actions? A. Incorrectly adjusted rear-view mirror B. Misaligned radar sensor after a minor collision C. Low windshield washer fluid levels D. Activation of the hazard lights None 66. ASE L4: RADAR-Based Systems Service and Diagnosis If a vehicle's radar-based blind-spot detection system is not functioning and no Diagnostic Trouble Codes (DTCs) are present, what should be checked next? A. The interior rearview mirror adjustment B. The cleanliness of the radar sensor surface C. The air pressure in the spare tire D. The fuse for the infotainment system None 67. ASE L4: RADAR-Based Systems Service and Diagnosis A radar-based cross-traffic alert system intermittently fails to warn of approaching vehicles. What should a technician inspect first? A. The transmission fluid level B. The firmware of the vehicle's body control module C. The radar sensor's mounting and wiring D. The condition of the tail lights None 68. ASE L4: RADAR-Based Systems Service and Diagnosis A customer reports that their radar-based parking assistance system beeps continuously when no obstacles are present. What could be the MOST probable cause? A. The parking brake is engaged. B. The vehicle's rear is heavily loaded. C. There's accumulated snow around the radar sensor. D. The audio system volume is set too high. None 69. ASE L4: RADAR-Based Systems Service and Diagnosis If a technician is unable to perform a radar sensor calibration due to persistent errors during the process, what should be checked FIRST? A. The vehicle's tire pressure B. The electrical system's grounding points C. The sensor's power supply voltage D. The alignment of the vehicle's suspension None 70. ASE L4: RADAR-Based Systems Service and Diagnosis When performing a dynamic calibration on a radar-based adaptive cruise control system, which of the following is essential? A. A full tank of gas to ensure proper weight distribution. B. The vehicle must be loaded to maximum capacity. C. A clear day with no precipitation. D. The use of a manufacturer-specified drive route. None 71. ASE L4: RADAR-Based Systems Service and Diagnosis In a radar-based system, what could cause sporadic malfunctions that occur only during heavy rain? A. Reduced tire tread depth affecting vehicle stability B. Moisture infiltration in the radar sensor housing C. The windshield wipers are set to a high speed. D. The radar's waveguide is contaminated with road salt. None 72. ASE L4: RADAR-Based Systems Service and Diagnosis What diagnostic tool is primarily used to confirm that a radar unit is transmitting and receiving correctly after installation? A. A multimeter B. A radar test box C. An oscilloscope D. A scan tool None 73. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis When diagnosing a vehicle with an ultrasonic-based parking assist system that is not functioning, what should be checked after confirming there is no fault code present? A. The audio alert volume settings in the vehicle's infotainment system. B. The cleanliness of the ultrasonic sensor faces. C. The tire pressure of all four wheels. D. The brightness of the rear taillights. None 74. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis An ultrasonic sensor's range of detection can be affected by which of the following environmental factors? A. High altitude operation. B. Strong electromagnetic fields. C. Ambient noise at a frequency similar to the sensor's operation. D. Proximity to oceanic saltwater environments. None 75. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis During the service of an ultrasonic-based system, a technician notices that the sensor's seal is compromised. What is the most likely consequence if this issue is not addressed? A. Increased sensor range. B. Reduced sensitivity to small objects. C. Sensor damage due to moisture ingress. D. False positives due to air turbulence. None 76. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis What issue can cause an ultrasonic parking assist system to fail intermittently in hot weather? A. The expansion of the sensor mounting brackets. B. Sensor overheating and temporary shutdown. C. Reduced electrical resistance in wiring. D. Increased ambient noise levels. None 77. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis What is the recommended procedure after replacing an ultrasonic sensor on a vehicle? A. Immediate road testing at various speeds. B. Sensor calibration using the appropriate scan tool. C. Replacing all sensors in the system concurrently. D. Checking the alignment of the headlights. None 78. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis A technician is unable to calibrate an ultrasonic sensor. What could be the cause? A. The sensor is installed at a slight angle. B. There is a low battery voltage condition. C. The vehicle is not on a level surface. D. There is a minor scratch on the sensor's surface. None 79. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis If an ultrasonic sensor's performance degrades over time, which of the following is a common cause? A. The sensor's piezoelectric elements have become less responsive. B. The vehicle's battery is not supplying adequate voltage. C. Wear in the vehicle's suspension components. D. Diminished tire tread depth. None 80. ASE L4: Ultrasonic (Sonar)-Based Systems Service and Diagnosis What could cause an ultrasonic-based blind spot detection system to detect vehicles incorrectly? A. The presence of a strong Wi-Fi signal near the vehicle. B. The installation of aftermarket window tinting. C. A misaligned bumper where sensors are housed. D. The use of non-OEM tires. None 1 out of 80 Time is Up! Time's up
