Run Flat Indicator: Alternatively

• ABS control unit with additional software for Run Flat Indicator 

> R56

The ABS control unit is standard equipment on the R56. RPA is integrated into the DSC control unit by means of additional software.

• ASC+T control unit with additional software for Run Flat Indicator 

> R56

ASC+T is special equipment on the R56 (ASC+T: Automatic Stability Control plus Traction). RPA is integrated into the ASC+T control unit by means of additional software.

• DSC control unit with additional software for Run Flat Indicator 

> E46, E53, E60, E61, E63, E64, E70, E83, E85, E86, E87, E90, E91, E92, E93

> R56: Optional equipment

With the DSC Mk60 and DSC 8, the RPA is integrated in the DSC control unit using additional software (The E70 is equipped with DSC 8 Premium).

• CIM: Chassis Integration Module 

  > E65, E66

  The CIM controls:

  • Servotronic
  • Steering column adjustment
  • Run Flat Indicator (RPA)

  The following control units are involved in the Run Flat Indicator system (in alphabetical order):

• CAS: Car Access System 

  > E60, E61, E63, E64, E65, E66, E70, E87, E90, E91, E92, E93, R56

  The CAS control unit provides input signals relating to terminal status (e.g. terminal 15 ON).

• GM: General module 

  > E46, E53, E83, E85, E86

  The general module provides input signals relating to terminal status (e.g. terminal 15 ON).

• JBE: Junction box electronics 

  > E70, E87, E90, E91, E92, E93, R56

  The JBE is the data interface (= gateway) between the K-CAN and the PT-CAN. (K-CAN stands for "Body Controller Area Network"; PT-CAN stands for "Powertrain Controller Area Network")

  The junction box consists of the junction box electronics and the electrical distribution center.

• KGM: Body gateway module 

  > E60, E61, E63, E64 from 09/2005

  The body gateway module (KGM) replaces the safety and gateway module (SGM).

  The KGM forms the data interface (= gateway) between the K-CAN and the PT-CAN.

• M-ASK or CHAMP or CCC: Multi-audio system controller or multimedia platform or Car Communication Computer 

  M-ASK or CCC or CHAMP (multimedia platform: CHAMP; Central Head Unit and Multimedia Platform) issues an acoustic warning through the loudspeakers if the tire pressure should drop.

  (On vehicles without M-ASK or CCC or CHAMP, the instrument cluster will emit the warning.)

• SGM: Safety and gateway module 

  > E60, E61, E63, E64 up to 09/2005

  > E65, E66 from 03/2004

  The SGM is the data interface (= gateway) between the K-CAN, byteflight  and the PT-CAN.

• SZL: Steering column switch cluster 

  > E87, E90, E91, E92, E93, R56

  The signals from the on-board computer button and from the rocker switch are recorded and processed in the SZL. The data is transmitted to the instrument cluster (on-board computer).

• ZGM: Central gateway module 

  > E65, E66 until 03/2004

  The ZGM forms the data interface (= gateway) between the K-CAN and the PT-CAN.

• KOMBI and CID: Instrument cluster and Central Information Display 

A fault in the RPA or drop in tire pressure will be indicated by the RPA indicator and warning light in instrument cluster.

At the same time, the symbol will light up in the LCD display.

Faults registered by the RPA are indicated as follows by the RPA indicator and warning light (for variations, please refer to NATIONAL VERSION ):

• The RPA indicator and warning light lights up:

• Red  (with acoustic signal):

  Drop in tire pressure more than approx. 30 % ± 10 %.

  Driving safety is no longer guaranteed.

• Yellow: 

RPA failed

Information about the check control message can be called up in the CID (CID is fitted depending on the vehicle's equipment).