Tire Pressure Monitoring System (TPMS) (Audi A4 B8)

If the vehicle is equipped with a tire pressure indicator, this is indicated by the corresponding equipment code on the vehicle data plate or in the system. ELSA, in the special instructions for this model, in the "Vehicle Parameters" document. The tire pressure monitoring system checks the pressure in all four tires while driving. Damaged tire pressure sensors must be replaced for safety reasons. Do not clean tire pressure sensors with steam or high-pressure air jets. For safety reasons, after using tire sealant, replace the tire pressure sensor and clean the rim. The tire pressure monitoring system consists of a control unit, a central antenna built into the control unit, and a tire pressure sensor on each of the drive wheels. If the vehicle's wheel alignment has been changed, wheels or tire pressure sensors have been replaced, or tire pressure has been changed, the control unit must be reconfigured. In case of replacement of a wheel with tire pressure sensors (winter/summer tires), it is necessary to check the pressure and reconfigure the sensor in the control unit.

The error registration memory may contain entries when: There is a failure in the system. Not all wheels with tire pressure sensors are installed. When installing tires without or with incorrect tire pressure sensors. (In this case, the yellow "System fault icons" indicator light comes on in the instrument cluster and cannot be deactivated via the system.) The system has recognized new sensors, although the button on the multimedia system control panel. "E380" for setting the current tire pressure values was not pressed. (In this case, the system error can be cleared by pressing a button.)

Removal and installation the control unit of the system. tire pressure monitoring system "J502"

The tire pressure monitoring control unit "J502" is located in the front right footwell, under the dashboard. Before removing the control unit of the system. for the tire pressure monitoring system "J502", perform the "Control unit replacement" function in the Guided Fault Finding mode. Remove the glove compartment. Remove the threshold trim. Unscrew the fasteners "arrow A" and remove the trim "arrow B".





Unscrew bolt "1" and remove deflector "2".



Remove the "arrow" cover and take out the cabin filter. Using a second mechanic, carefully bend the floor covering to the side.



Turn the insulating mat "arrow" upwards.



Unlock and remove connector "3". Loosen nuts "1" and remove the system control unit. tire pressure monitoring "J502" "1" up.

Installation

Installation in reverse order. If, when returning the floor covering to the installation. if the center console has been removed from the dashboard, insert the center console pivot "1" into the dashboard "2". Tighten the nuts "1" to a torque of 2 Nm.



In case of replacement of the system control unit. the tire pressure monitoring system "J502" requires re-coding of the system.