Tires, Wheels with Tire Pressure Monitoring System
Tires, Wheels with Tire Pressure Monitoring System
Wheels, Changing
If wheels are changed (for example change from summer to winter tires), wheel electronics send data as soon as speed of new wheels exceeds 25 km/h. Wheel electronics identification numbers are automatically recognized and read by control module.
An acceleration data check also occurs with vehicle speed. This process takes about 7 minutes.
Tire pressure monitoring control module (J502) must first be in learning mode before it can automatically learn wheel electronics.
Vehicle must stand for 20 minutes for this. This takes 5 minutes after a recognized tire puncture.
If the standing time is not followed, control module is not in learning mode so system recognizes a malfunction and can only automatically learn wheel electronics after standing 20 minutes.
• When changing wheels, be sure to install only Volkswagen approved wheel/tires combinations with tire pressures listed on the tank flap.
• If unapproved wheel/tire combinations are installed, these must have a TUV certificate for the particular vehicle and a 2nd wheel set must be learned via the vehicle diagnosis, testing and information system (VAS 5051B).
• Learning is also needed if tire pressure deviates from pressures given on fuel filler flap.
Wheel sets with other specified tire pressures
If a vehicle is equipped with tires which have specified pressures different from those listed on fuel filler flap, these tires (2nd wheel set) can also be monitored by the Tire Pressure Monitoring System (TPMS).
Specified values for a 2nd wheel set must be entered in system using vehicle diagnosis, testing and information system (VAS 5051B ).
Wheel electronics on wheels from 2nd set are not automatically recognized and learned by the tire pressure monitoring system (as wheel electronics on Volkswagen approved wheel/tire combination set are).
To change to a 2nd wheel set, the following steps must be carried out:
• Read the wheel electronic (tire pressure sensors) identification numbers (IDs) before installing.
• Switch the TPMS to wheel set 2.
• Enter needed specified tire pressures and wheel electronic IDs in system.
Tire, Pressing Off
CAUTION!
• Pay attention to the safety precautions and conditions. Refer to => [ Safety Precautions and Conditions for Removing and Installing Tires, Wheels with Tire Pressure Monitoring System ] Service Precautions
- Release air from tires, to do so remove the nickel-coated valve insert.
- When pressing off tire on a tire dismounting/mounting machine with press-off blade, always make sure that tire valve/tire pressure sensor - arrow - is located opposite the press-off blade - 1 -.
Press-off blade must be applied at maximum 2 cm removed from rim flange.
- Remove balancing weights and coarse dirt from disc wheel.
- Press off both tire beads around circumference while thoroughly applying tire mounting paste between tire and rim flange - arrow -.
Tires, Dismounting
CAUTION!
• Pay attention to the safety precautions and conditions. Refer to => [ Safety Precautions and Conditions for Removing and Installing Tires, Wheels with Tire Pressure Monitoring System ] Service Precautions
• Mounting head must not be located in area - a - of tire valve/tire pressure sensor, otherwise the mounting head will damage the tire pressure sensor.
Removing Tires
- Turn the wheel on tire mounting device so that valve/tire pressure sensor is in front of mounting head.
- Position mounting head in vicinity of tire valve/tire pressure sensor so that tire iron can be put on approximately 30° next to tire valve/tire pressure sensor.
- Now pry tire bead over mounting finger on mounting head using tire iron and remove tire iron again.
- Let the tire dismounting/mounting machine run clockwise until upper bead lies completely above the rim flange.
- Turn the wheel on tire mounting device so that valve/tire pressure sensor is in front of mounting head.
• Check tire pressure sensor for loose or damaged parts. If threaded connections are loose, union nut, valve insert, seal, sealing washer and valve cap must be replaced by new parts from repair set.
• If tire pressure sensor is damaged, then it must be replaced completely. Refer to => [ Tire Pressure Sensor ] Service and Repair.
Tires, Mounting
CAUTION!
• Pay attention to the safety precautions and conditions. Refer to => [ Safety Precautions and Conditions for Removing and Installing Tires, Wheels with Tire Pressure Monitoring System ] Service Precautions
• When changing a tire, it is recommended to change the tire pressure sensor seals at the same time.
- Coat rim flanges, tire beads and inside of upper tire beads thoroughly with tire mounting paste.
- Install the inner side of the tire first
- Turn the disc wheel on tire mounting device so that valve/tire pressure sensor- arrow - is opposite to the mounting head.
- Push the tires between the tire valve/tire pressure sensor and the mounting head into the bed in direction of - arrow -.
- Let the tire dismounting/mounting machine run clockwise.
- Mounting of the lower bead ends before the tire valve/tire pressure sensor to prevent damage to tire pressure sensor.
Tire bead now slips over the rim flange. Wheel may be turned only as far until mounting head is located just in front of tire valve/tire pressure sensor.
- Make sure tire bead fits correctly on mounting head and let mounting device run clockwise.
- Mounting of the upper bead ends before the tire valve/tire pressure sensor to prevent damage to tire pressure sensor.
Tire bead now slips over the rim flange. Wheel may be turned only as far until mounting head is located just in front of tire valve/tire pressure sensor.
- Inflate tire to an inflation pressure of max. 3.3 bar (spring pressure).
CAUTION!
If tire beads do not make contact completely on disc wheel edge, pressure must not be increased under any circumstances.
Pre-damage to tire or disc wheel would result.
- If tire beads do not make contact completely on disc wheel edge, then release air, press off tire bead once more and coat rim flange thoroughly again with tire mounting paste.
- Inflate tire to an inflation pressure of max. 3.3 bar (spring pressure).
- If tire beads make contact on bead seat without problems, then increase inflation pressure to 4 bar to settle tire.
- Install a new nickel-plated valve insert and fill the tire to the specified pressure.
- Then balance wheel.
- Mount the wheel and tighten it to tightening specification. Refer to => [ Wheel Bolt Tightening Specification ] Specifications.