[W126 Coupe] defeating ASR (was: universal dash symbols)

[Gerry Van Zandt]

I used regularly defeat the standard ASR on my 1994 E500 by just  
unconnecting one of the ASR/ABS wheel sensors under the hood. Yes you  
get ASR and ABS lights on, and the computer throws and stores a code  
(easily cleared), but you get unfettered ability to burn rubber as  
needed.

Later on I installed a factory "ASR OFF" switch in the dash and  
connected it through a relay directly to the ABS computer underhood,  
so that it throws the ASR light but still retains ABS. Little bit of  
wiring through the firewall and some soldering and such, and $50 or  
so worth of parts, but worth it to control by a factory switch from a  
W140.

For the SEC, probably best just to jump the 5 and 6 pins as was said.  
The snow chain switch isn't worth squat and is a very poor to zero  
substitute for the jumpering process.

As said, it's best used for auto-cross and drag racing (tire warm-up  
burnouts) but otherwise best to just keep the ASR on. It really can  
and does keep you out of trouble.

Cheers,
Gerry



On Oct 8, 2007, at 9:15 AM, mbcoupes-request at mbcoupes.com wrote:


> Engaging the switch only raises the allowable limit of slippage up  

> to 40

> mph, @ which point is resets itself.

>

> If you want to disable the ASR, you can jumper pins 5&6 in the test

> port, or unplug your ABS/ASR Relay.

>

> Just remember when you do either of the above, your ABS is disabled  

> as well.

>

> If anyone plans on taking their SEC to the track/Auto X etc and they

> have ASR I would strongly recommend disabling it as the system is  

> quite

> privative w/ brutally low limits.

>

> Not sure if it's been mentioned, but all cars equipped w/ ASR have  

> open

> differentials, ie, non-LSD units as per all the other 560's so  

> donuts in

> the parking lot wouldn't be nearly as much fun;-)

>