E-Class (W212) 2010 - 2016: E 350, E 550

Faulty Front Differential or Transmission???

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Old 06-15-2024, 09:07 PM
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2012 & 2014 E350 Sports, 2017 E43
Faulty Front Differential or Transmission???

Last night my son was driving the 2014 E350 4matic and while making a sharp U-turn, he heard a clunk noise and then lost ability to drive the car. When I try to go in first gear, I can hear a clunking noise from the front area most likely coming from the front differential. When put in reverse there is no clunking. The car was running smooth before this problem and no messages on the instrument cluster. The following codes are present for the transmission. All three say stored and not current. Any ideas, or someone else experienced this problem before. I will have it towed to a local Houston shop on Monday.

Last edited by a4ncar; 06-15-2024 at 09:11 PM.
Old 06-15-2024, 09:53 PM
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MY'14 W212 M276 3.5NA @55kMi
Originally Posted by a4ncar
Last night my son was driving the 2014 E350 4matic and while making a sharp U-turn, he heard a clunk noise and then lost ability to drive the car. When I try to go in first gear, I can hear a clunking noise from the front area most likely coming from the front differential. When put in reverse there is no clunking. The car was running smooth before this problem and no messages on the instrument cluster. The following codes are present for the transmission. All three say stored and not current. Any ideas, or someone else experienced this problem before. I will have it towed to a local Houston shop on Monday.
Lately there's an epidemic of bad front prop shafts. Get your Front + Rear differential oil serviced to drain any glittery wear.
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Old 06-15-2024, 10:05 PM
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2008 E350 (W211 @170K), 2012 ML350 (W166 @119K), 2014 E350 Sport (W212 @96K), 2015 ML350 (W166 @92K)
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Old 06-15-2024, 10:28 PM
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Originally Posted by CaliBenzDriver
Lately there's an epidemic of bad front prop shafts. Get your Front + Rear differential oil serviced to drain any glittery wear.
I changed the front / rear differential fluids along with transmission fluid last year @ 70K and had completed the 80K service like 2 weeks ago.
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Old 06-15-2024, 10:31 PM
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Originally Posted by juanmor40
Luckily, I cannot see any broken parts or fluids so far. Plan to take it to @MBENZTECH (Marvin) shop on Monday.
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