GL Class (X166) 2013-2015 after facelift became GLS (X166)

Loud clicking when accelerating

Old Feb 4, 2025 | 05:03 PM
  #1  
ocdjg's Avatar
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2010 S550, & 2015 GL550
Loud clicking when accelerating

Hi guys,

Need some help. Whenever I accelerate even remotely spirited I hear a loud clicking coming from what I think is the drivers side wheel well. It used to only happen when I would floor it but it’s gotten worse. I was thinking it was the cv axle but I do not see any signs of damage. Any help on diagnosing this issue would be greatly appreciated.
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Old Feb 4, 2025 | 08:01 PM
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2013 ML350 Bluetec
Does it get worse when you're turning while accelerating?
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Old Feb 5, 2025 | 02:37 PM
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No, it’s the same whether in turning or going straight.
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Old Feb 6, 2025 | 06:58 AM
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There is noting to get clicking unless you shattered your CV or front differential. Bring it to mechanic shop put it on lift and check. In general you can be jumping transfer case chain, which is most car of that mileage. But you need to change it before it messes up transfer case
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Old Apr 11, 2025 | 05:06 PM
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Originally Posted by arsupisemnet
There is noting to get clicking unless you shattered your CV or front differential. Bring it to mechanic shop put it on lift and check. In general you can be jumping transfer case chain, which is most car of that mileage. But you need to change it before it messes up transfer case
Hopefully OP solved the issue already.
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Old Apr 12, 2025 | 09:57 AM
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2003 E320 4matic wagon
Originally Posted by ocdjg
Hi guys,

Need some help. Whenever I accelerate even remotely spirited I hear a loud clicking coming from what I think is the drivers side wheel well. It used to only happen when I would floor it but it’s gotten worse. I was thinking it was the cv axle but I do not see any signs of damage. Any help on diagnosing this issue would be greatly appreciated.

Most likely there is something embedded in the tire, causing the clicking (think screw slapping the pavement at every rotation).

Take wheel off and inspect, or, on a flat safe surface, think non-traveled parking lot, put car into neutral, gently run both hands starting from top of wheel around the surface of the wheel to the bottom, then do wheel again for previous tire portion touching road. Key here is not to put too much pressure onto tire b/c something may be sharp! Go slow. Tell us what is discovered.
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Old Apr 12, 2025 | 11:06 AM
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Originally Posted by L&N Caravan
Most likely there is something embedded in the tire, causing the clicking (think screw slapping the pavement at every rotation).

Take wheel off and inspect, or, on a flat safe surface, think non-traveled parking lot, put car into neutral, gently run both hands starting from top of wheel around the surface of the wheel to the bottom, then do wheel again for previous tire portion touching road. Key here is not to put too much pressure onto tire b/c something may be sharp! Go slow. Tell us what is discovered.
That's a good answer.
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Old May 3, 2025 | 12:22 AM
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Most likely is the transfer case. Chain is stretched out.
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