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  Model: Lexus IS sedan Driving Mileage: 74565 miles  Issue: The customer came to the store and reported that the vehicle's audio (as shown in Figure 1) would not work, and asked for inspection and maintenance.  Figure 1  Troubleshooting: We turned on the radio after starting the car and found that there was no sound from the stereo, and no response occurred when we tried to adjust the volume. However, the volume shown on the navigation did change, so we adjusted the playback mode to CD playback, but there was still no sound. We asked the customer about the car's...

Model: C300 with 274 engine. Driving Mileage: 18,465 miles Issue: When the ignition switch is turned on, the steering wheel vibrates, and the multi-function display in the center of the instrument prompts "the lane keeping assist system has stopped working".  Troubleshooting: Connect the diagnostic instrument to perform a quick test. The steering column module N80 has a fault code: B1E9F15 steering wheel electronic device has functional failure, there is a short circuit or open circuit to the positive pole; B1EB015 lane keeping assist system has a fault, there is short circuit or open circuit to positive; there is also a...

Issue: The car's keyless entry function is invalid.  Diagnosis: The vehicle is new. When doing PDI, the maintenance professional discovered that the system had a fault code: “B117113 enters and starts the system antenna in the bumper is open, static," which was deleted after the fault code was removed. When testing the four-door keyless entry function, the door lock function was working, but on the second day, the customer reported the failure again.  After the technician picks up the car and turns on the ignition switch, the instrument displays "Fault: Keyless System". The fault code is still B117113.  The entry...

VIN: SALMN15486A××××××. Driving mileage: 33418 miles. Issue: The customer reported that the sunroof of the car could not be opened.  Diagnosis: The car was brought into the factory for routine repair. The sunroof could not be opened, according to the owner. The sunroof did not respond when the sunroof switch was operated after the vehicle key was switched on, according to the fault verification. The sunroof calibration with Land Rover's unique diagnostic device yields no results.  When connecting the diagnostic instrument to read the fault code, no associated fault code is found. The following are the main reasons for the...

Issue: The Lexus ES350 sedan has 136,000 miles and is fitted with one-key smart start and smart boarding functions. Customers say they can't utilize the smart car system normally.  Diagnosis: Start the vehicle without using the smart key to approach the ignition switch, indicating that the smart entry system is not turned off (can be set to turn off), turn the vehicle power mode to OFF state, press the smart key to lock and unlock Switch, it is discovered that the vehicle can be unlocked and locked normally, without any abnormalities, the vehicle will be unlocked. The vehicle could be...