I participated in the Emission Recall Campaign 2020050014. I have a 2013 ML350BlueTec. I have been back to the dealer 10 times to fix my car after the recall was performed. The check engine continues to return in an on (orange light) position after only a few days. On trip 5 my car could not accerlate and lost power. The problem related to the NOX sensors that are being replaced each visit. MB USA replaced b19/9 temp upstream of turbo charger and b9/11 temperature sensor upstream of catalyst. Also remove and replace 3 temp sensors. Again, I have been back 10 times to the dealer for continual problems related to the recall. Since Nov. 29, 2021, the warning light (check engine) remains on and MBUSA does not respond to fixing it. MBUSA reported that there is a software issue they are working on. Can you help please?

- Bonita, CA, USA

Vehicle has 129,000 miles. When trying to accelerate from a stop, mostly noticeable when fuel is lower in the tank and/or on an incline, RPM drops to zero, no amount of pressure on gas pedal does anything until the engine speed picks up, usually with a jerk forward. Makes going onto a busy street very unsafe. Have read it may be software related.

- Riegelsville, PA, USA