Tire pressure monitor (TPM [RDK]) messages - GF40.15-P-0001-08CE

The tire pressure monitor (TPM [RDK]) system messages are shown in the multifunction display (A1p13) of the instrument cluster (A1).

A distinction is made between the following:

Menu displays and
Warning messages

The menu displays can be called up in the instrument cluster using the tire pressure monitor menu.

The warning messages appear automatically.

Depending on the warning message the tire pressure monitor warning lamp (A1e66) is also actuated.

Menu display 1

The TPM [RDK] system is not available until the "circuit 15 ON" status.

Fig 1: Display TPM (RDK) System Is Not Available

Courtesy of MERCEDES-BENZ USA

Menu display 2

The TPM [RDK] system is nonfunctional. Possible causes are:

IC does not receive any valid signals from tire pressure monitor control unit (N88)
Tire pressure monitor control unit nonfunctional:
Shutoff because of malfunction
Failure of left front tire pressure sensor (A69/1), right front tire pressure sensor (A69/2), left rear tire pressure sensor (A69/3) or right rear tire pressure sensor (A69/4) because of excess temperature

Fig 2: Display Tyre Press. Monitor Inoperative

Courtesy of MERCEDES-BENZ USA

Menu display 3

TPM [RDK] system in diagnosis mode.

Fig 3: Display Tyre Press. Monitor Diagnosis In Progress

Courtesy of MERCEDES-BENZ USA

Menu display 4

Normal status of TPM [RDK] system

Fig 4: Display Tyre Pressure Monitor Active

Courtesy of MERCEDES-BENZ USA

Menu display 5

TPM [RDK] system unable to receive signals from tire pressure sensors. Possible cause is:

one or more wheels fitted without tire pressure sensor

Fig 5: Display Tyre Press. Monitor Inoperative

Courtesy of MERCEDES-BENZ USA

Menu display 6

Display before manual reactivation.

Fig 6: Display Current Pressure As New Reference Values

Courtesy of MERCEDES-BENZ USA

Warning message 1

The TPM [RDK] system is nonfunctional. Possible causes are:

IC does not receive any valid interior CAN (CAN B) signals from tire pressure monitor control unit
Tire pressure monitor control unit nonfunctional: - Shutoff because of malfunction

The tire pressure monitor warning lamp flashes on and off for t = 60 s and then stays on permanently.

Fig 7: Display Tyre Press. Monitor Inoperative

Courtesy of MERCEDES-BENZ USA

Warning message 2

Major loss of pressure detected in a tire.

The tire pressure monitor warning lamp is permanently actuated and then an acoustic notification is emitted.

Fig 8: Display Tire Pressure Monitor Warning Lamp

Courtesy of MERCEDES-BENZ USA

Warning message 3

Rapid loss of pressure in a tire.

The tire pressure monitor warning lamp is permanently actuated and then an acoustic notification is emitted.

Fig 9: Display Tire Pressure Monitor Warning Lamp

Courtesy of MERCEDES-BENZ USA

Warning message 4

The tire pressure monitor control unit is unable to receive signals from the tire pressure sensors.

Possible cause is:

one or more wheels fitted without tire pressure sensor.

The tire pressure monitor warning lamp flashes on and off for t = 60 s and then stays on permanently.

Fig 10: Display Tyre Press. Monitor Inoperative

Courtesy of MERCEDES-BENZ USA

Warning message 5

The TPM [RDK] system is temporarily inactive because of transmission interference or because the voltage is too high/low.

The tire pressure monitor warning lamp flashes on and off for t = 60 s and then stays on permanently.

Fig 11: Display Tyre Press. Monitor Currently Unavailable

Courtesy of MERCEDES-BENZ USA

Warning message 6

Operation feedback after manual reactivation.

Fig 12: Display Tyre Press. Monitor Reactivated

Courtesy of MERCEDES-BENZ USA

Warning message 7

Request for pressure correction.

Fig 13: Display Request For Pressure Correction

Courtesy of MERCEDES-BENZ USA