Increase Idle Speed By Reprogramming ECM/DME (M5.2) (12 06 99)
Publication date: 1999-12-01Reference number: 12 06 99
INCREASE IDLE SPEED BY REPROGRAMMING ECM/DME (M5.2)
TECHNICAL SERVICE BULLETIN
INCREASE IDLE SPEED BY REPROGRAMMING ECM/DME (M5.2)
Model(s): BMW E38 - 740i/iLA with M62 engine prod. 12/95 - 4/97
BMW E39 - 540i/iA with M62 engine prod. 3/96 - 4/97
Group: 12 - Engine Electrical System
Bulletin No.: 12 06 99
Date: February, 1999
SITUATION
Customer complains that the engine seems to stumble and the engine idle speed appears to be too low especially with the A/C off and when:
- Steering wheel is turned fully to the right or left
- Reverse gear is selected with automatic transmission
CAUSE
Increased load requirement from steering/transmission
CORRECTION
In case of a customer complaint, increase the engine idling speed by reprogramming the DME control module using CD P15.0 or higher. The revised program will increase the engine speed at idle by approximately 100 RPM.
PROCEDURE
In order to reprogram the Engine Control Module a manual determination must be performed and the following part numbers must be entered.
| Model | Basic P/N | Programmed P/N |
|---|---|---|
| E38 - 740i/iLA | 1 429 884 | 1 430 663 |
| E39 - 540iA | 1 429 884 | 1 430 649 |
| E39 - 5401 | 1 429 884 | 1 430 648 |
Refer to attachment for programming instructions.
WARRANTY INFORMATION
Part and labor are reimbursable under the terms of the BMW Emissions and New Car Limited Warranty of 4 years/50,000 miles.
| Defect Code | Labor Operation | Labor Allowance |
|---|---|---|
| 10 32 90 59 00 | 12 14 710 | E38 - 6 FRU E39 - 7 FRU |
ATTACHMENT TO S.I. 12 06 99
Programming of Engine Control Module (DME)
The flow chart shown in Fig 1 , Fig 2 and Fig 3 provides information on how to perform a determination and programming/update of a currently installed or replacement "flash" control module using the MODIC or DIS.