ABC - Drive Carefully error
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Joined: Dec 2010
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Cl 500
ABC - Drive Carefully error
I have a 2001 CL 500 and 3 days ago got the ABC - Drive Carefully error.
I took my car in to my personnel mechanic did multiple diagnostic checks and a pressure check overnight but the car did not lower nor has a leak. He change the fluid out anyways. but couldn't figure out what the issue is. Said he thinks its the tandem pump. I took the car back over the weekend and notice that when I initially start It up the error comes up, put it in drive move a couple yards and there's a severe vibration/runbling sound almost like a dirt bike winding down for about 3 seconds and than goes away and the Error clears? But only happens when the car sits and I initially start it , put it in drive and the car moves. after the initial vibration it never comes back until I park and start it again. I was thinking maybe the airmatic pump going bad? but not sure if that would make the ABC error come on. I don't think it would be the accumulator I think that gives you a constant low rumbling noise at low RPM's. Any ideas much appreciated.
I took my car in to my personnel mechanic did multiple diagnostic checks and a pressure check overnight but the car did not lower nor has a leak. He change the fluid out anyways. but couldn't figure out what the issue is. Said he thinks its the tandem pump. I took the car back over the weekend and notice that when I initially start It up the error comes up, put it in drive move a couple yards and there's a severe vibration/runbling sound almost like a dirt bike winding down for about 3 seconds and than goes away and the Error clears? But only happens when the car sits and I initially start it , put it in drive and the car moves. after the initial vibration it never comes back until I park and start it again. I was thinking maybe the airmatic pump going bad? but not sure if that would make the ABC error come on. I don't think it would be the accumulator I think that gives you a constant low rumbling noise at low RPM's. Any ideas much appreciated.
Last edited by truncalep; Jun 14, 2014 at 10:03 PM.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 6,340
Likes: 22
From: Southern California, USA
2003 CL55 AMG
More than likely your pulsation dampener is shot.
I would recommend checking all four nitrogen spheres. At the age of your car (whats the mileage?), my guess is your one or more of your spheres (dampeners / accumulators) are shot are about to be shot.
I would recommend checking all four nitrogen spheres. At the age of your car (whats the mileage?), my guess is your one or more of your spheres (dampeners / accumulators) are shot are about to be shot.
Junior Member
Joined: Jan 2010
Posts: 66
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CL600
Could you get your mechanic to give you the error codes?
Most of the time its actually pretty easy to diagnose errors in the abc system, and I am a DIY mechanic with only basic knowledge.
Low pressure will trigger an error code!
I have a link for pretty cheap pressure accumulators if you are from Europe.
David
Most of the time its actually pretty easy to diagnose errors in the abc system, and I am a DIY mechanic with only basic knowledge.
Low pressure will trigger an error code!
I have a link for pretty cheap pressure accumulators if you are from Europe.
David
Member
Joined: Apr 2009
Posts: 89
Likes: 3
CL500
Could you get your mechanic to give you the error codes?
Most of the time its actually pretty easy to diagnose errors in the abc system, and I am a DIY mechanic with only basic knowledge.
Low pressure will trigger an error code!
I have a link for pretty cheap pressure accumulators if you are from Europe.
David
Most of the time its actually pretty easy to diagnose errors in the abc system, and I am a DIY mechanic with only basic knowledge.
Low pressure will trigger an error code!
I have a link for pretty cheap pressure accumulators if you are from Europe.
David
P.M!!!
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Senior Member
Joined: Feb 2010
Posts: 390
Likes: 2
From: SoCal
CL65, FJ80, Sportsmobile 4x4, Model X Plaid
Does anything need to be drained, pinched off, or pressure released to replace the accumulators?
Do I have to bleed the whole system or is there a bleed value just where the accumulator is connected?
Do I have to bleed the whole system or is there a bleed value just where the accumulator is connected?
Last edited by NRL; Jul 15, 2014 at 05:46 PM.
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