Table 1 shows one common service brakes related problems of the 2016 Mercedes Benz Metris.
| Problem Category | Number of Problems |
|---|---|
| Service Brakes problems |
2016 vehicle with approximately 72000 miles. While attempting to stop, vehicle had complete brake failure, brake pedal locked in place and unable to move. Safely pulled to side of road and shit engine off. Upon restarting the brakes went back to normal. This sequence happened 6times over the course of 3 days. Vehicle was taken to dealership. Dealer diagnosed as brake booster pump faulty. Currently waiting on quote for repairs.
Two failures of wheel speed sensors. Right front was first and just caused the computer to shut down anti lock breaking system. Most recent was left rear and caused transimission to go into “limp”.
Engine on and vehicle parked for 10 minutes with parking brake applied. Leaving from a parked position with engine running, parking brake released, I shifted from park into drive but the vehicle showed I was still in park. Could hear transmission shifting from p to d and to r but no information feedback. Eventually I found that I could engage in reverse, neutral, park, and drive but only park was showing on display. I tried restarting the van but it didn't change. Received errors for turning car off while in drive even though I was in park. I ended up driving with the car in "park" for about 100 miles to my destination. During the drive, there were lots of errors mainly the speedometer would not work ( had power but only said 0 mph). The tachometer remained at ~800rpm regardless of actual rpm. The gas gauge wouldn't work. Numerous errors occurred with the active braking system (alarm only). The srs defective indicator remained on the entire drive. When I reached my destination (gas station), shifted to park. I turned the car off again and completely disconnected everything electrical and let the van sit for ~5 minutes. The errors cleared when I restarted and the speedometer/tachometer/gas/srs all worked but I had a new check engine light activated. The only message was still related to srs but the cel stayed on even after acknowledging the service message. After about ~200 miles and 3-4 restarts the cel cleared and everything worked properly for the remainder of our trip (about 1000 miles round trip). Later, I was able to recreate a similar system malfunction when applying the parking brake. I've since been able to conjur random errors all related with safety systems and the park/drive/reverse scenario 50% of the time after applying and releasing the parking brake. The errors only happen after activation and release of the parking brake (so far to this day).