Engine Controls - Hot Starting Issues

SI M12 03 10
Engine Electrical Systems

April 2011
Technical Service

This Service Information bulletin supersedes SI M12 03 10 dated February 2011.

[NEW] designates changes to this revision

SUBJECT
N14 with AISIN Transmission - Hot Starting Problem

MODEL
R55, R56, R57 with N14 engine and AISIN automatic transmission produced from 3/1/2010 to 7/30/2010, as well as earlier production cars which have been reprogrammed as noted below

SITUATION
The engine fails to stay running when started hot, or may take several attempts to stabilize smooth idle speed.

This problem could occur with higher ambient temperatures (above 25°C) and engine temperatures above 97°C.

The most common scenario is when starting after refueling or similar heat soak conditions.

Note:
In addition to cars from the affected production period, earlier production N14 AISIN vehicle programmed for other reasons, such as a control module replacement or retrofit, e.g., John Cooper Works Tuning kit, could be affected if they are currently at either the R056-10-03-50x to R056-10-06-500 integration levels.

CAUSE
DME software error

CORRECTION
Do not replace any parts!

For this "Hot Start" problem, program the vehicle using ISTA/P 2.40.0 or higher.

Target integration level (new) R056-10-11-510 or higher

Note that ISTA/P will automatically reprogram and code all programmable control modules that do not have the latest software.

For information on programming and coding with ISTA/P, refer to CenterNet / Aftersales Portal / Service / Workshop Technology / Vehicle Programming.





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