Special Notes For Tyre Pressure Monitoring (Tpm)
WARNING: This page is about a different car, the 2021 Porsche Macan, 2020 Porsche Macan, and 2019 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
NOTIFICATION
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.
> Refer to 443200 - Tyre Pressure Monitoring (TPM) system not active after changing wheels in the appropriate service information.
Information
Overview of wheel electronics
- If the old wheels are still near the vehicle after assembly work (for example changing winter tyres 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 adjust the vehicle outside the radio range of these wheels using the PIWIS Tester.
- Before changing a tyre, 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.
3rd generation wheel electronics
| 1 | Self-locking (Torx) screw - replace |
| 2 | Wheel electronics |
| 3 | Valve, complete (No. 5 to No. 7) |
| 4 | Valve cap |
| 5 | Valve body with valve insert |
| 6 | Double chamfered washer |
| 7 | Union nut |
| 8 | Wheel electronics assembled |
Valve must be replaced complete with screw -1, - 2, 3- if:
- The wheel electronics unit is removed
- The self-locking 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 (tyre sealing liquid) has been used
- The service life of the battery is exceeded
- There is a fault inside the wheel electronics unit.