C218 CLS63, 2011 - 2019

Serpentine belt replacement

Old Jul 6, 2023 | 12:21 PM
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cls550 2014
Serpentine belt replacement

2014CLS500 105K miles, time to change the belt. Is it necessary to replace all the pulley also?
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Old Jul 27, 2023 | 01:19 AM
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W212 MY'14 M276-3.5NA @75kMi
BLT KIT

Originally Posted by rumb
2014CLS500 105K miles, time to change the belt. Is it necessary to replace all the pulley also?
Yes, address this job at once with a repair kit:
serpentine BELT
belt TENSIONER
belt IDLERS

The tensioner develops a pigeon-hole, it is then unable to dynamically tension the long belt.
Wobly idler bearing are responsible for side to side belt motions.
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