Tires, Dismounting With TPMS
The Tire Pressure Monitoring System (TPMS) specified within this information refers to the optional TPMS, which employs individual pressure sensors to determine individual tire pressures.
The base TPMS does not employ individual pressure sensors to determine individual tire pressures, but instead is an integral part of the Antilock Brake System (ABS). For more information on the ABS, refer to Description and Operation .
- 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 .
-- Release air from tires, unscrew the nickel-coated valve insert to do so.
-- 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-.
- 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 .
- 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.
-- 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 the tire pressure sensor is damaged, then it must be replaced completely, refer to REMOVAL AND INSTALLATION .