A/T - E39 THMR1 Hard 1-2/2-3 Gear Upshifts

Group 24
Automatic Transmissions

Bulletin Number
24 07 00

Woodcliff Lake, NJ
November 2000
Service Engineering

This bulletin is also issued in Group 12 (Engine Electrical), S.I. 12 03 00, the contents of which are identical.

SUBJECT
E39 THMR1 Harsh 1-2 and 2-3 Upshift with Light Throttle Application

MODEL
E39 with M52TU produced 9/98 to 2/99

SITUATION
Customer complaint of a hard 1-2/2-3 upshift when accelerating lightly.

CAUSE
[1][2]DME/ECM calibration

CORRECTION

Reprogram the [1][2]DME/ECM with CD 23.0 or higher.

PROCEDURE





1. Before programming, check the [1][2]DME programmed and basic control module numbers. If the numbers shown are displayed, do not program the DME. Contact the Technical Hotline for further information.

2. An automatic determination can be used to reprogram the [1][2]DME/ECM in a '99 or '00 MY 528iA/iAT.

Select:

-- Programming

-- [1][2]DME programming

-- Exchange control unit

-- Determine basic control unit

-- "Is faulty control unit installed in car?" ... select "Yes"

-- Enter VIN

-- Program basic control unit

-- Clear adaptation values





The numbers shown will be displayed after programming with CD23.0.





WARRANTY INFORMATION

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