SL55/63/65/R230 AMG: 05 SL65 ABC problem: rear raises when engine is off
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2005 SL65 AMG
05 SL65 ABC problem: rear raises when engine is off
Hi, I got 2005 SL65 6 months ago and now started to have ABC problem with engine off. When the engine is running, the ABC works just fine - car is leveled and sits at normal heights. When I turn off the engine, within about 20 seconds the rear driver side raises about 4" (I hear a sound like an air is coming in) and rear passenger side raises about 2". The front of the vehicle drops 2-3", especially the passenger side such that it almost seats on the wheels. When I turn the engine back on, the red warning "Car too low" comes ON and I have to raise it using the raise button (button works normally in all positions), at which point the car straightens and drives normaly. I have already replaced the rear driver side strut and front ABC valve block, but the problem persists. Rodeo test was normal. All struts work as they should. Please let me know if anybody experienced something similar. P.S. I have recently had ECU and TCU tuned, can this be related?
Last edited by pogodin; Aug 24, 2014 at 04:19 PM.
Thread Starter
Newbie
Joined: Aug 2014
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2005 SL65 AMG
I traced the problem to the re-balancing of the ABC after engine shutoff. If I disconnect one of the strut sensors after ignition is off, the ABC goes into fault mode and the problem (rear driver side raises) does not happen. Apparently, the vehicle re-balances incorrectly after engine off. Any idea what could cause it?
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Joined: May 2010
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From: Santa Rosa Cali
2006 sl55 030 option - sold
I think I have a scan tool that I can look at values with. Do you know the normal values for the valve block , how many I have and what it is called in the ABC suspension. If I find the bad one , can I remove it and rebuild .
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Member
Joined: May 2010
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From: Santa Rosa Cali
2006 sl55 030 option - sold
I'm going to remove my rear valve block and dis-assemble it. you can clean them and then put it back together. I'm not sure when I'm going to due repair , but it should be in a few weeks.
Did you buy a new valve block and if so how much?
Did you buy a new valve block and if so how much?
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Senior Member
Joined: Jul 2006
Posts: 487
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From: North Carolina, US
'06 E500, '99 ML430 and '07 SL65
A scan tool will not do it. With Xentry you can actuate the valves individually and see which one doesn't hold the pressure.
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Joined: Jul 2006
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From: North Carolina, US
'06 E500, '99 ML430 and '07 SL65
You need some experience to be able to do it you self. There are companies that can rebuild the block for you.
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Joined: May 2010
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From: Santa Rosa Cali
2006 sl55 030 option - sold
I think I can do it , I am a 15+ year tech. I have been reading up on the system and it looks like the problem would be in the block and yes I wish I could get my hands on that tool. I'm going to ask a round. The problem would be if I had a bad solenoid but I don't think so because the system works. I'm thinking something is sticking.
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Joined: May 2010
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From: Santa Rosa Cali
2006 sl55 030 option - sold
That's great pogodin !!
now you can just do a quick swap for the rear one.
I work at a shop can you tell me where you got new o-rings , or are they like a standard size in the o-ring kit we have and you just matched them up??
What about the solenoids , did you ohm and test them ?
now you can just do a quick swap for the rear one.
I work at a shop can you tell me where you got new o-rings , or are they like a standard size in the o-ring kit we have and you just matched them up??
What about the solenoids , did you ohm and test them ?
Senior Member
Joined: Jul 2006
Posts: 487
Likes: 4
From: North Carolina, US
'06 E500, '99 ML430 and '07 SL65
I think I can do it , I am a 15+ year tech. I have been reading up on the system and it looks like the problem would be in the block and yes I wish I could get my hands on that tool. I'm going to ask a round. The problem would be if I had a bad solenoid but I don't think so because the system works. I'm thinking something is sticking.
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Joined: Aug 2014
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2005 SL65 AMG
I think I used this set: http://www.harborfreight.com/225-pie...ent-67609.html
I think the ones I used were from this set, but I could be wrong as I got several different sets.
Harbor has lots of different sets for $5 per set pretty much. I would get 2-3 sets and see which ones fit, you will spend $15 or so.
http://www.harborfreight.com/catalog...sult?q=o+rings
I think the ones I used were from this set, but I could be wrong as I got several different sets.
Harbor has lots of different sets for $5 per set pretty much. I would get 2-3 sets and see which ones fit, you will spend $15 or so.
http://www.harborfreight.com/catalog...sult?q=o+rings
Thread Starter
Newbie
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2005 SL65 AMG
I would get this one: http://www.harborfreight.com/205-pie...kit-67644.html
and this one:
http://www.harborfreight.com/225-pie...ent-67609.html
and this one:
http://www.harborfreight.com/225-pie...ent-67609.html
Member
Joined: May 2010
Posts: 97
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From: Santa Rosa Cali
2006 sl55 030 option - sold
Ok so I took so time and removed the rear valve block. took it apart and cleaned it. as I was putting it back together , I found a cracked o-ring on one of the smaller solenoids . These O-rings are square cut. So I used a round cut style , because that's all I had.
I found the problem is still there and now I'm going to attempt to find a good used one and try that.
If someone has one hit me up.
I found the problem is still there and now I'm going to attempt to find a good used one and try that.
If someone has one hit me up.
