DIY ASR Defeat Switch - Page 3 - PeachParts Mercedes-Benz Forum

vcci · #31 03-26-2003, 03:28 PM

Thas what I've been trying to tell everyone. Hope you all succeed.

Michael · #32 03-26-2003, 03:53 PM

FWIW I was reluctant to permanently mess with/cut into the wires involved this time around, since they did NOT match the color codes cited by RENNTech. However, obviously the wire #s were right, 'cuz it got the job done.
Ross/All, here's what you do-pull your ASR module out, and figure out which 2 rows of connectors are closer to the centerline of the car, when installed. That done, look near the pins (on the module) and you'll see their identification #s. Put thin tape over 25, 35, & 37 and then re-install the module (I also put a tiny dab of grease on each to ensure they'd slide in easily w/o damaging the tape). Pop the lid back on the CAN and you're done!

I may indeed do a permanently installed switch sometime, but it is sort of a bear to get that upper aluminum CAN box separated from the lower part and out of the car - if you don't have all the right hand tools you're gonna have a tough time

PS I just boiled the tires thru 2 gears

Glen · #33 03-26-2003, 04:07 PM

Quote:

Originally posted by vcci
Thas what I've been trying to tell everyone. Hope you all succeed.

I think we understood what you were saying. I was hoping for clarification on the switch/relay needed to safely turn ASR off. I'm hesitant to just install an inline switch...

Can your friend provide a diagram to help us build a proper relayed switch?

vcci · #34 03-26-2003, 04:16 PM

the box that RRENtech sells only has 3 relays insode. All you would need is 3 relays connected to a switch which can cut or give power to the ASR. Thats all I can tell you. As I mentioned before I didnt do it so I cant give exact instructions, sorry. Hope that helped everyone.
Asi

Glen · #35 03-26-2003, 04:24 PM

Thanks...any info at all is helpful.

Michael · #36 03-26-2003, 04:24 PM

vcci-

Thanks for your help! Should've said that in my earlier post

vcci · #37 03-26-2003, 04:34 PM

before installing the actuall switch I was running the car with the ASR disconnected for about 3 weeks, never had any problems.

aldedmon · #38 03-26-2003, 05:00 PM

Your fiendish friend ...Young DR. Frankenstein. whose engineering masterpiece has us all salivating so. You keep saying you do not know what / how he did it. So what's it gonna take to get this guy a computer and a digi cam so that we can finally get some answers.......

need2speed · #39 03-26-2003, 06:41 PM

My E-Class Owners Bible also suggests you can simply jumper sockets 6 and 1 on the diagnostic plug together and this will disable the ASR/ABS module.

The ASR/ABS warning lights will come on and I suppose a fault code will be registered.

tom woolner · #40 03-26-2003, 07:31 PM

Dean, restating the obvious, won't that disable the ABS as well as the ASR? I'm not sure I want to do that. I like having ABS handy, just in case...

Tom
92 500 E

need2speed · #41 03-26-2003, 08:52 PM

Too true Tom, you'd lose both ABS and ASR. But, for a temporary shut down to have some fun or run the car on a dyno, it could do the trick.

Michael · #42 03-26-2003, 09:14 PM

Dean/All,

Jumping pins 1 & 6 throws the car into diagnostic mode, and kills both ABS and ASR, lights the dashboard idiot lights, and stores a fault code (I think). You can do the same thing by simply unhooking one of the front wheel speed sensors...same results. However, what I've done just shuts off ASR, but does light the ASR dash warning light. Oh well.

vcci · #43 03-26-2003, 09:31 PM

That was not the case when mine was done. Only the ASR was effected and not the ABS, ABS was still working normally.

My friend has been out of town for the past couple of weeks and will not be back for another three weeks or so. As soon as he is back I will find out and post further instructions. I just don't understand how nobody here can figure it out, it seems there are many knowledgeable people here. He was able to figure it out just by looking at the diagram. I wouldnt be able to figure it out if my life dependent on it, but it can't be that hard if one is familiar with electrical. Anyway I will post further info a soon as he is back in town. Maybe someone can figure it out before then. Hope it helps and sorry if it doesnt.
Asi

aldedmon · #44 03-26-2003, 10:58 PM

Asi,
You have given us all hope , the light at the end of the tunnel if you will. Surely we know it can be done and many have done it to a greater or lesser degree. But your setup seems to be the best compromise (between the high $$ Renntech switch and other pin jumping code storing methods) that has been listed on this forum to date. Our(My) frustration is that we(I) want what you have , but have been unable to copy this seemingly simple process. Bear with us(Me).Because as soon as we do figure it out, we can ALL then enjoy the raw, unadulterated pleasure of making these beasts beg us to ease up on the right foot. Thanks for taking the lead on this mod. and finding an inexpensive way to do it that works!

Michael · #45 03-27-2003, 06:39 AM

C'mon, this MUST be pretty easy to do. I mean, all I did was interrupt those 3 connections. So, if you install a relay (or rather, 3) that can be made to open or close these connections at will, then you're done. I'd think a trip to Radio Shack and you're done.