# Service bulletin SI\-B11\-09\-08

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10034668
- Published by NHTSA: 2011\-01\-03
- Manufacturer's number: SI\-B11\-09\-08
- Manufacturer's date: 2010\-07\-01
- NHTSA component: EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; STEERING:HYDRAULIC POWER ASSIST:PUMP

## NHTSA's summary

BMW: ALTERNATOR DRIVE BELT BROKEN. THE MODELS UTILIZE A SINGLE SERPENTINE DRIVE BELT FOR THE POWER STEERING PUMP, ALTERNATOR, AND AIR CONDITIONER COMPRESSOR. DURING NORMAL DRIVING, THE FRONT ENGINE MOUNTS ALLOW THE ENGINE TO MOVE SLIGHTLY ON THE FRONT AXLE CARRIER. HOWEVER, UNDER EXTREME CONDITIONS, SUCH AS DRIVING AT HIGH RATES OF SPEED OVER CURBS OR SPEED BUMPS, THE ENGINE MOVEMENT CAN RESULT IN THE SERPENTINE BELT OR POWER STEERING PUMP PULLEY CONTACTING THE FRONT ENGINE CARRIER. IF THIS OCCURS, THE BELT AND/OR PUMP PULLEY COULD BE DAMAGED. NO MODEL YEARS LISTED. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Electrical system, Engine, Equipment and accessories, Heating and air conditioning, Steering, Alternator, Drive belts, Power steering

## Vehicles listed

- 2011 BMW 1 SERIES
- 2010 BMW 3 SERIES
- 2010 BMW 3 SERIES
- 2010 BMW 3 SERIES

## Other bulletins for the same vehicles and component

- [SIB\-32\-03\-14](/bulletins/10057531.md), 2015-06-06, Service bulletin: STEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM. BMW: IN CHECK CONTROL MESSAGE OR INSTRUMENT CLUSTER, A FAILURE WITH POWER ASSISTED STEERING IS ILLUMINATED, DUE TO SOFTWARE RELATED ISSUES. \*PE
- [SIB\-32\-02\-13](/bulletins/10052320.md), 2013-07-10, Service bulletin: STEERING:ELECTRIC POWER ASSIST SYSTEM. BMW: SOME VEHICLES MAY EXPERIENCE A FAILURE OF ELECTRONIC POWER STEERING \(EPS\) WHEN ENGINE HAS STARTED, CAUSED BY A SPECIFIC SITUATION OF UNDERVOLTAGE DURING ENGINE START UP. MODEL 2010\-2012 F30 \(3 SERIES\). \*PE
- [SIB\-32\-04\-07](/bulletins/10036979.md), 2011-04-26, Service bulletin: STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING:HYDRAULIC POWER ASSIST SYSTEM. BMW: A NEW TECHNICAL PROCESS HAS BEEN CREATED FOR BMW TO IDENTIFY CAUSES OF STEERING COMPLAINTS WITH A WIDE RANGE OF MODELS. \*RM

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