DIY - ABS relay repair - Fix that ABS light

[deansbimmer]

I should know better but its been a while since I've snooped under my car. Do all four wheels have a wheel speed sensor? ABS light in mine has always been on, but thought it was due to missing wiring. Never though of the relay.

[george graves]

Here is your old text:

Home arrow Race Team News arrow Fixing the ABS relay
Fixing the ABS relay PDF Print E-mail
Written by Admin
Monday, 31 March 2008

By Dan Pereda and Peakracer.com



Repairing the ABS relay on a BMW E30.



Look at the dash on many e30s and you will most likely find the ABS light on. Most of the time is because of a blow relay. They relay tends to blow for simple things such as jumpstarting your car. The fusable link inside is there to keep you from burning out the ABS computer. The proper way is to replace the relay, but in a pinch you can just repair the fusable link. *** WARNING*** repairing this relay will leave your ABS computer unprotected and you may blow up the ABS computer in the future. DO THIS AT YOUR OWN RISK. The article is how to find and fix that relay.



Step 1: Disconnect the battery



Step 2: Locate the Relay under the dash on the Driver’s side (you will have to remove the black panel) In the picture below the yellow box highlights where the relay was located on our car.(relay not pictured)







Step 3: It is clipped on by a little metal tab. Just wiggle it back and forth and it should come free.

Step 4: your going to have to pry back the aluminum case. It is ver easy to bend with a pair of needle nose pliers.

Step 5: inside you should see the burnt wire.



Step 6: You will have to solder the wire back together or solder in a new wire. The gap was to big on mine to solder back together, so I soldered in a piece of MIG wire, but any think wire should work.



Repair a BMW E30 ABS Relay. - Watch a funny movie here





Step 7: Put it back together and plug it back in, Reconnect the battery. Start it up and check for fault codes.






Last Updated ( Monday, 31 March 2008 )

[danny325is]

Sorry, I seem to have lost that post to the internet ether.

The Pics are still available in this album
http://picasaweb.google.com/dpereda/SpecE30.

I will try to rewrite it some day

[ThaiRacer]

????/ link is dead and the brake lights are annoyinh

[ThaiRacer]

the link is dead any1 can post up a new link please?

[sticksdaman]

So is it the relay or the fuse that blows?

anyone know if it ever got rehosted?

[Wh33lhop]

The tires do lock or rather partially lock in newer cars. Wheel speed sensors sense lockup, it is just highly temporary. ;)

[ieatpeople]

alright, i have a strange problem...

in my e28, sometimes the light is on, sometimes its not. but the abs works all the time.

its kind of sketchy, but i'm not sure how good abs was back then. upon the application of full braking it will lock the tires for about 10 feet, then lock, unlock, lock , unlock; leaving about 5 foot stripes until it comes to a stop.

is that how its supposed to work? in newer cars its more of a stuttering of the pedal, and the tires never fully lock.

[Poopie]

yeah any updated servers?

[e30rida]

Man I sure could have used this info a month ago. I got the relay for $20 though.

[OrganicMechanic]

orginal link is dead--any info ?

[eek142]

If someone could post some more pictures of where exactly you're supposed to solder, that'd be pretty helpful. I soldering in a thin strand of copper wire, but I think I used the wrong points..

[catchuk]

what size fuse should a person use here?

[danny325is]

Sorry guys I moved servers and that article didn't find a home on the new server yet.

I will add it soon.

[ADEN]

link no worky too