Engine Controls - Temp Gauge Goes To Red/No Overheat

SI B 11 11 06
Engine

October 2006
Technical Service

This Service Information bulletin supersedes S.M. B11 201 03 dated February 2003.

SUBJECT
M52TU M54 DME FC 222

MODEL
E53, E39, E46, E36/7 (Z3) with M52TU, M54 up to 01/03

SITUATION
During prolonged warm-up, when ambient temperatures is below -10 C and full heat or defrost is selected, engine temperature gauge goes to red. Engine does not overheat. Possible additional faults: EGS 148 (94) CAN Engine Temp.

CAUSE
Possible software calibration in DME.

PROCEDURE
The improved DME software was introduced since DIS CD V32 with update 1.

On a customer complaint basis, reprogram DME with the current version of Progman. Do not replace thermostat or other components.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.

Defect Code Refer to KSD

Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD





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