E70 goes into trailer mode before coding- no brake lights?

[smassey321]

Originally Posted by spyro235

That's great news! Bad news is that my mechanic forgot his laptop and can't clear a short code for me/ code the module, because the short code needs to be fixed before the AHM can be coded in. So.... I guess I'm going to try to get Tool 32 and ISTA/P working, and learn to do it myself. Need to tow for 250 miles on Saturday, and the car will be in the shop all Friday having a wheel bearing done.... So i guess it's today, or driving all that distance without brake lights on the trailer... I'd really prefer not doing that.

Tool 32 won't help you and ISTA/P is a difficult install. Try basic coding with ncs expert. Get the standard tools software here https://www.bimmergeeks.net/downloads

Follow these instructions Getting Started - Coding E90 | Coding E90

Add +AHMU to VO/FA in CAS and FRM

Change AHM config values below

LAENDERVARIANTE_AHM
us
CCMELDUNG_ABRISS_AHV
cc_04bh
CCMELDUNG_FEHLER_AHM
cc_04bh
CCMELDUNG_VERRIEGEL_AHV
cc_04bh
START_CCM
klemme_15
TYP_AHV_SG
keine_ahv
SL_BEI_KZL_AKTIV
nicht_aktiv