W203 Anti-theft control module
#1
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W203 Anti-theft control module
I bought a new anti-theft control module, figured it was next to the alarm siren under passenger wheel well, but its not. does anyone know where the control module is located?
#2
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And its not underneath the fender shroud, I have taken everything apart and only thing in the bracket is the siren itself. there is a plug that is connected to the siren which I assume is coming from the anti-theft module. But no module is to be seen
#5
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#6
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Join Date: Mar 2012
Location: Brampton, Ontario
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2005 E55 AMG
Pope, Russel isn't completely correct. The Rear SAM does control the connections to all the sensors and lights, however the actual ATA (Tow Away) module is part #A2118209126 and sits just to the upper right of the Rear SAM on the same bracket. There should be a 3 wire connector (wire colors: red/white, brown/green and green/gray) that connects the ATA module to socket 4 in the back of the Rear SAM. Hope that helps you.
Last edited by techniker; 03-31-2012 at 02:54 AM.
#7
Hello,
I think my Anti-Theft module is not working. The red flashing light in the cabin doesn't start when I engage the remote lock. I used this thread to locate the module. Found exactly what techniker describes (with the 3 wires). However, in my car the part number is different. Do part numbers vary even within w203s? My part number is A203 820 27 26. I just wanted to know if techniker's mentioned part number is compatible with my car.
Also, from what you have read, am I going in the right direction? I tried replacing the siren (that sits behind the F/R mud guard) but that didn't help. I have attached a picture of the module below.
I think my Anti-Theft module is not working. The red flashing light in the cabin doesn't start when I engage the remote lock. I used this thread to locate the module. Found exactly what techniker describes (with the 3 wires). However, in my car the part number is different. Do part numbers vary even within w203s? My part number is A203 820 27 26. I just wanted to know if techniker's mentioned part number is compatible with my car.
Also, from what you have read, am I going in the right direction? I tried replacing the siren (that sits behind the F/R mud guard) but that didn't help. I have attached a picture of the module below.
Last edited by Halcyon; 08-01-2015 at 09:54 PM.
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#8
Out Of Control!!
Absolutely amazing, purchasing parts and you haven't even found the fault. I wish I had you as a customer.
In any event why not get a scan and first find out what is at fault, before jumping off the fence and running down and trying to screw them all!!
In any event why not get a scan and first find out what is at fault, before jumping off the fence and running down and trying to screw them all!!
#9
I replaced the siren because that's what someone said the problem was. But I returned it to the seller for a full refund, so no harm done.
Secondly, I don't trust those guys with the scanner because I had a problem with my F/R turn signal, and two mechanics used their equipment to suggest that there was no ground and hence the control module for the turn signal had to be replaced. I didn't believe them so I got to work on it myself and found a bad contact between the the bulb and housing--that's all!