2011 E550 - ironing out issues
Keyless Go - Brake on the pedal, press the starter button and the car goes to position 1 or 2 but nothing happens. Sometimes I have to press it 2 or 3 times to start the car. I pulled the button out and used the key for a week. One morning, I got in the car, put the key in the ignition, turned it, and the same thing, nothing (lights do come on). Brake switch replaced but that didn't help it.
Stalling - This happened one time about a month ago. I started the car and sat there about 20 seconds, put the car in reverse, and it stalled after going two feet. Put the car in Park and restarted and it didn't happen again until this morning when leaving for work.
I replaced the battery with a Die Hard Platinum H7 AGM 850CCA. The old battery was 3 years old and the car has only been driven 6k miles.
Thoughts? MAF/TB cleaning, CPS, Starter/solenoid?
Last edited by BigMike62; Dec 6, 2021 at 02:19 PM.


My cousin (Mercedes Tech) has the car this week while I'm traveling. He will look it over and figure out what is going on. I'll update the findings.
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I got back from a work trip last night and took the car on some errands today. This car is so sweet to drive and it's great that it starts without any drama every time now.


