Special Notes For Tyre Pressure Monitoring (TPM)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Wheel electronics
- Wheel electronics unit and valve may have been fitted incorrectly.
- Wheel electronics units may not have been assigned correctly.
→ Read and follow the installation instructions for the wheel electronics units. → 443219 REMOVING AND INSTALLING WHEEL ELECTRONICS
→ Check that the wheel electronics units are assigned correctly. → Removing And Installing Wheel Electronics
Information
- If the old wheels are still in the vicinity after assembly work (for example changing winter tires and/or wheels from another vehicle with TPM), these will still be detected by the system. If one or more of these wheels has a minimum pressure of more than 0.5 bar (7 psi) below the required pressure, this can trigger a warning in the instrument cluster. In this case, remove the wheels or use the PIWIS Tester to adjust the vehicle outside the radio range of these wheels .
- Before changing a tire, read out the remaining life span of the wheel electronics unit (battery capacity) using the PIWIS Tester .
- For vehicles with Tyre Pressure Monitoring (TPM), the valve and wheel electronics -arrow- are only replaced in exceptional cases. The following points can make replacement necessary .
- Self-locking (Torx) fastening screw
- Wheel electronics
- Valve, complete (No. 5 to No. 7)
- Valve cap
- Valve body with valve insert
- Double chamfered washer
- Union nut
- Wheel electronics assembled
Valve must be replaced complete with screw -1, 2, 3- if:
- The wheel electronics unit is removed
- The self-locking fastening screw -1- is loose
- The valve body -5- is bent
- The union nut -7- is loose.
The wheel electronics unit -2- must be replaced if:
- The housing is visibly deformed
- The filter surface (round, porous section on back of wheel electronics) is so badly soiled that it can no longer be cleaned by wiping
- Tyre sealing compound (tire sealing liquid) has been used
- The service life of the battery is exceeded
- There is a fault inside the wheel electronics unit.