BAS\EPS steering wheel sensor.. - Mercedes-Benz Forum
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#1 (permalink) Old 02-01-2008, 07:08 AM
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BAS\EPS steering wheel sensor..

First thread, happy to be a member...

I'm looking for the least expensive solution, a bit like every boby!

The angle sensor on the steering wheell shaft is defective, causes to disable my bas/eps system an light up the warning light.

I had the ML check by a specialist to confirm the problem..

Them call Benz for the part an thoses geniuses told me that I need to replaced the hole shaft at a bargan price of 890$....

So know I'm turning to you guy's

I there a way to replace that sensor without changing the hole shaft.

Any advice is wellcome.

Jay
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#2 (permalink) Old 02-01-2008, 07:49 AM
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Steering angle sensor thread might be usefull to you.


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#3 (permalink) Old 02-01-2008, 08:49 PM
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steering angle sensor can be change.I dont think you have to change the shaft.I live in taiwan it is about US$150 here. I think it should be something like US$100 in the US. A ml320 is US$100000 in taiwan.(when it was new)
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#4 (permalink) Old 02-01-2008, 10:20 PM
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It's probably possible to replace it without doing the entire shaft, and I urge you to do so. First hand experience here: 05 500 still under warranty and I had same issue and my local MB techs attempted to replace the sensor - now these guys are pretty good, based on my experience with them. After replacing the sensor, there was some backlash in the steering shaft and no one could figure out what it was. They had to do the entire shaft to resolve the issue. It could be that they didn't want to bother with the time consuming diagnosis (I have no idea how warranty repairs work!!!), but replacing the shaft did it for me. I still believe that the sensor can be done without redoing the shaft. Do some research and ask your local MB shop, and then ask again and again!!!!!!!!!!!!!

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#5 (permalink) Old 02-02-2008, 01:25 PM
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Hate to say the sensor is attached to the steering column so in order to replace the sensor the shaft does need to be replaced. Have you had the car aligned lately? The steering wheel must be centered and not off by more than something like 5 degrees +/-

You can read this tread where I also got the steering angle sensor fault code. http://www.benzworld.org/forums/w163...s-problem.html
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#6 (permalink) Old 02-03-2008, 09:59 AM
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I found the Brake Light Switch. It was easy to take out. Mine is a 2002 ML500 with 67K miles on it

Last edited by cnwakobi; 02-04-2008 at 03:50 PM.
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#7 (permalink) Old 05-29-2008, 06:30 PM
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fix for the Steering Angle Sensor

Hi everyone,

My first real post! I own a 2000 ML 430, and the Steering angle sensor was failing from the moment I bought the car. I took it to a dealership which in turn just ran a diagnostic and confirmed it. Before I did that, I did change out the brake light switch, but it did nothing, but I am sure it was a good idea to change it out anyway.

So anyway. The steering angle sensor took me 1 hour to change. Removing the entire steering column was NOT NECESSARY. The sensor is simply mounted between two separate parts of the shaft, and slides off when you simply unbolt the shaft in the middle. It's accessible underneath the dash, and is very easy to access. The trick is to find a sensor for sale, because the rest of this job is super simple. You don't have to take the steering wheel apart, you don't have to unplug anything (except for the sensor you're replacing).

First, take your car and get the code. You need to know for sure what you are attacking. There should be a foreign car repair shop around that will hook up their handheld computer and get the diagnosis of your BAS/ESP light. Once confirmed that it is the steering angle sensor (my case the control box was giving a code as well in relation to the steering angle sensor, all related) you need to remove the black shield from under the dash. It comes off with two screws on the firewall, and two more on the upper dash trim. You can take a look underneath once its off and you can plainly see the column. You will also see a black wheel disc attached into the middle of the column. To take it out, remove the nut and bolt behind the disc that runs through a knuckle. You'll need a hex or something to hold the other side when you turn the other side with the right wrench or socket. Once loose, pull the steering wheel towards you. It will pull straight out and part of the sensor will fall on the floor. The other part of the sensor is held by three small hex screws, so remove those, and the rest will come off. Unplug. Now take the new one, plug it in, screw it back on with the same three screws. The sensor light wheel is next and goes on only one way working with the thread in the steering column. Push the steering wheel back down to expose some of the steel, and slide the plastic light guide back on (including a metal small disc that gives small pressure). From there, realign the knuckle, and press the steering wheel down the rest of the way. From there, rebolt the steering column. Make sure its down all the way and tight as you can imagine. It's life or death if you get this wrong, because if its not down tight and comes off while you are driving, you will lose control of the car. THIS IS SUPER IMPORTANT. Make sure its all the way in, and you can see it in between the knuckle and that the bolt pinches it tight. Test it by pulling back on the steering wheel. If its hard and tight, you're good.

Questions, email me.
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#8 (permalink) Old 05-30-2008, 03:09 PM
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Thanks for the description!
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#9 (permalink) Old 06-04-2008, 09:34 AM
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I literally just had this same issue…in fact I just go the ML back last night.

BAS/EPS light came on Monday morning (2-JUN-08) brought it to the dealer immediately (still under warranty).

Angle sensor seemed to be the issue, so they had to keep the truck overnight, because it was a “long job.” Ended up, they replaced the entire steering column!

So far so good (except now my passenger mirror tilt feature is working really slowly, but I’ll start a separate thread regarding that issue…don’t want to hijack this one)
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#10 (permalink) Old 02-20-2009, 12:08 PM
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BAS/EPS

I am have the same problem with my ML320 and I had it was confirmed by a Mercedes dealer that it is the steering angle sensor. the problem i am having is finding the part???? Any one know were i can find one in the US????

Last edited by ibks1; 02-20-2009 at 12:10 PM. Reason: left out a word
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