Component Description For Tire Pressure Monitor Control Unit - GF40.15-P-5124RD
Model 172.4
with code 475 (Tire pressure monitoring system)
Viewed from rear
Location
The tire pressure monitor control unit is located on the underfloor above the rear axle.
Tasks
The tire pressure monitoring system control unit has the following tasks:
- Reading in of signals
- Evaluation of input factors
- Transfer of information
Reading in of signals
The input factors are read in over the following connections:
- Two-way radio
- Chassis CAN (CAN E) (up to model year 2017)
- Chassis CAN 2 (CAN E2) (as of model year 2017)
Two-way radio
The following signals are read in using radio:
- Left front tire pressure sensor (A69/1)
- Right front tire pressure sensor (A69/2)
- Left rear tire pressure sensor (A69/3)
- Right rear tire pressure sensor (A69/4)
Chassis CAN (up to model year 2017)
The following signals are received via the chassis CAN:
- from instrument cluster (A1)
- Vehicle speed signal
- Outside temperature
- Kilometer reading
Chassis CAN 2 (as of model year 2017)
The following signals are received via chassis CAN 2:
- From the instrument cluster
- Vehicle speed signal
- Outside temperature
- Kilometer reading
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor whereupon the information is then sent.
Transfer of information
The tire pressure monitoring system control unit sends information via the chassis CAN (up to model year 2017) or via chassis CAN 2 (as of model year 2017) to the instrument cluster; this information is shown as menu displays and as warning messages.
Body
The central antenna is integrated in the tire pressure monitor control unit.
| Wiring diagram for tire pressure monitor control unit | PE40.15-P-2101-97TAA |