e46 m3 traction control

latG · #1 (**permalink**) 10-27-2003, 04:57 PM

Has anyone had their car on a chassis dyno? I'm wondering how the traction control will work given that the rear wheels will be turning-not the front-I would think that the TC would step in...

Any thoughts or experience? Thanks in advance.

tdc · #2 (**permalink**) 10-27-2003, 05:33 PM

You shut it off.

latG · #3 (**permalink**) 10-28-2003, 05:00 AM

it turns itself back on.......................

tdc · #4 (**permalink**) 10-28-2003, 06:58 AM

Are you holding the DSC button down for at least 5 seconds?

The DSC light and the BRAKE light (in yellow) should illuminate in the cluster indicating everything is shut off.

latG · #5 (**permalink**) 10-28-2003, 08:02 AM

hmmmmmmmmmmmmmmmmmmmm let me check...thank you.

sullyz · #6 (**permalink**) 10-28-2003, 11:03 AM

You have to pull a bunch of fuses.... all the ones the pertain to the DSC in any way. I tried to dyno the M once and couldn't find the correct info. After playing around for 30 minutes trying to get the correct ones pulled, I finally gave up. I think there are four or so different fuses you have to pull, otherwise it cuts out at 6500 RPM.

tdc · #7 (**permalink**) 10-28-2003, 11:36 AM

Oh snap. Completely didn't even see it was for an M3!!

My bad. Yeah, you need to pull the fuses for DSC and ABS.

latG · #8 (**permalink**) 10-29-2003, 04:51 AM

Thanks guys-appreciate it; I figured a fair amount of fuse pulling was called for, and wondered if anyone had success with it-so thanks again.

kvcicca · #9 (**permalink**) 10-29-2003, 08:14 PM

Pulling fuses still won't work.

The only way to run it on the dyno with full power, is to active the test function in the engine control unit using a BMW diagnoisis tester. Which you can only find at your local BMW dealer and needs to be connected to the car at the same time it is on the dyno.

Lucent · #10 (**permalink**) 10-30-2003, 04:26 PM

that's lame

BMWBOY · #11 (**permalink**) 11-01-2003, 04:30 AM

Strange, I have dynoed a few E46 M3's. I just hit the DSC button and it shuts it right off. Could Euro spec be different in this aspect?

latG · #12 (**permalink**) 11-01-2003, 05:40 AM

It appears to be so BMWBOY, that the Eurospec cars differ in this way-the TC turns back on, which is a pain. Thanks to all for their help though....