Tire Monitor System - 3rd Generation System Information

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) Technical Service Bulletin # 360309 Date: 100301

Tire Monitor System - 3rd Generation System Information

SI B 36 03 09

Wheels and Tires

March 2010

Technical Service

SUBJECT

Third Generation Tire Pressure Monitor System (RDC)

MODEL

E90, E91, E92, E93 (3 Series) from 9/09 production

INFORMATION

As of September 2009 production, a new generation Tire Pressure Monitor System has been introduced for all 3 Series models. Although the basic

operation of the system is similar to the previous version, there are several key differences between the two systems.

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 315

The new system consists of five components:

^ One central antennae with an integrated control module (5) mounted in the right rear wheel arch

^ Four wheel electronics (1-4) mounted at the base of each tire valve.

Central antennae with integrated control module

The control module and central antennae have been combined in a single housing. This new control module has the ability to send request for

information to each of the 4 wheel electronics via a low frequency single (125 kHz). This eliminates the need for separate transmitters, as used for

previous systems.

New style wheel electronics

2010 BMW 335Cic Convertible (E93) L6-3.0L Turbo (N54) 316

The wheel electronics consist of plastic housing with integrated circuitry. The following items are contained within the wheel electronics:

^ Pressure sensor

^ Temperature sensor

^ Acceleration sensor

^ Transmitter/receiver unit

^ Self-diagnosis controller

^ Battery

The following points should be considered when diagnosing and/or servicing the system:

^ The system components are not interchangeable or compatible with previous versions.

^ The type of wheel electronic fitted can only be determined via visual inspection.

^ The detection of low tire pressure and the subsequent warning is similar to the previous design.

^ The reset procedure has changed.

Special Note for Reset Procedure

After initiating a reset, the vehicle must be driven for a period longer than 12 minutes with a vehicle speed which exceeds 19 mph (~30 km/h).