GF40.15-P-0001-05RTU Tire Pressure Monitor (TPM), Messages Relevant to Operation
GF40.15-P-0001-05RTU Tire Pressure Monitor (TPM), Messages Relevant to Operation
Messages relevant to operation in the multifunction display (A1p13) of the instrument cluster (A1) inform the driver that the air pressure in at least one wheel is changing or has changed. There is a difference between a "soft warning" (information message) and a "hard warning" (warning message).
When "red" warning messages appear, the tire pressure monitor warning lamp (A1e66) in the instrument cluster is activated.
Messages relevant to operation are stored in the TPM [RDK] control unit (N88) with an event code.
Note: Messages relevant to operation describe a regular operating condition. In the event of complaint there is no reason to exchange system components.
Warning messages are shown in ("Red").
The following messages relevant to operation can occur:
Information message
If the air pressure in one or more tires drops > 0.25 bar but not > 0.4 bar below the pressure set by the driver and stored in the TPM [RDK] control unit, this is displayed on the multifunction display.
The information message appears for the first time in the next ignition sequence. The driver is therefore requested to check the tire inflation pressures and correct them if necessary.
The warning is canceled when filling detection or a manual reactivation is successfully carried out.
Note: This information message is displayed at the end of the trip for 30 s if the tire pressure monitoring (TPM) system is not reactivated.
Warning message
Function requirement:
- Rapid pressure loss (> 0.25 bar/min) is detected in one or more wheels.
In a parallel operation the system activates the tire pressure monitor warning lamp in the instrument cluster.
The driver should stop the vehicle immediately and check all the tires for any foreign bodies which may have penetrated. To make the vehicle safe to drive the spare tire must be fitted or the TIREFIT tire repair kit must used, if necessary.
Note: The appropriate TPM wheel sensor must be replaced after the use of a TIREFIT tire repair kit.
Warning message
If the air pressure in one or more tires drops > 0.4 bar below the specified pressure set by the driver and stored in the TPM [RDK] control unit, this is displayed on the multifunction display.
In a parallel operation the system activates the tire pressure monitor warning lamp in the instrument cluster.
The driver should stop the vehicle immediately and check all the tires for any foreign bodies which may have penetrated. To make the vehicle safe to drive the spare tire must be fitted or the TIREFIT tire repair kit must used, if necessary.
Note: The appropriate TPM wheel sensor must be replaced after the use of a TIREFIT tire repair kit.
This warning message is also displayed, if the TPM control unit refuses to perform an order to activate on the grounds of implausible pressure values.
Implausible pressure values:
- The tire inflation pressure set by the driver is under the minimum pressure stored in the TPM [RDK] control unit, which must not be dropped below.
- The pressure difference of the tire inflation pressures on one axle is >0.4 bar.
Remedy:
- Correct tire inflation pressure and reactivate the tire pressure monitoring system.
System message after a previous warning message
If at the preceding circuit 15 "ON" a "red" warning message was issued, then from the current and the following circuit 15 "ON" the opposite tire pressure monitor warning lamp comes on in the instrument cluster, as long as the tire pressure monitoring system has not been reactivated.