Transmission/Engine Controls - Delay In Engine Response
SI B24 02 12Automatic Transmission
March 2012
Technical Service
SUBJECT
N52T/N55 with 8HP45: Delay in Engine Response
MODEL
E70, E71 with the N55 engine and 8HP45 transmission from 4/1/2010 to 1/16/2012
F07, F10 and F25 with either the N52T or N55 engines and 8HP45 transmission up to 1/16/2012
SITUATION
When slowing down to lower suburban road speeds and then reaccelerating, a delay in engine response may be experienced.
This situation may be more noticeable when driving in a bend in the road or on roads with a rising gradient.
CAUSE
Unfavorable EGS and DME software calibration
CORRECTION
Program the vehicle using ISTA/P 2.46.0 or higher.
The corrected EGS and DME software was introduced as listed above.
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.
Note:
When the ISTA system message displays:
Battery voltage only "XX.XX" V. Please connect charger.
Please note the displayed battery voltage reading in the repair order comments section.
WARRANTY INFORMATION