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Q: Did rear end collision cause damage to TCU? on 2007 Mercedes-Benz E320 BLUETEC

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Was recently rear-ended. Got car fixed. Report there was a faint oil smoke smell and now the car goes into a type of limp mode when you accelerate to aggressively. Engine light is on. How can I prove the damage was caused by the rear end collision?
You can have the symptom diagnosed by mercedes benz and if it was caused by the collision then go from there. If not caused by collision then get it fixed before the problem worsens and it turns into a Hyundai.
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