My New W211 2008 E350 4MATIC w/ Questions on How to Perfect It




And yes, the convenience entry was notorious for breaking, I think they said that if you put your weight on the steering wheel while it was moving when getting out, the extra weight would break the dogbone gear. That's why eBay sells that replacement part. Better to just shut it off so there's one less thing to fix. My rear window shade has been broken for about 10 years too, worked initially then it gets stuck and needs help going up/down. Better to just leave it down than risk it breaking when it's up and then you can't the rear when it's dark out.






HOWEVER both keys start the car (haven't confirmed if the other keyless buttons work since the battery is dead). additionally, the metal keyway's "ridges" inside the fob matches exactly!
i suspected one of them is a replacement but after hearing you also have two different keys removes this suspicion.




Doors closed
Key in the ignition, position 2
Press brake and select reverse
Select passenger side mirror on the door switch
Adjust mirror as needed
Press M, then number to store along with your personal setting. Recall that setting will store ALL your favorite positions: seat , steering wheel position, and side view mirror .
Return door switch mirror setting back to neutral
Once stored, select parking. Side view mirror should return to previous position
Now test. Engine ON, press brake, select reverse, wait for mirror to stored position.
Do not recall if W211 has settings per key. Recent models have a different settings per key



HOWEVER both keys start the car (haven't confirmed if the other keyless buttons work since the battery is dead). additionally, the metal keyway's "ridges" inside the fob matches exactly!
i suspected one of them is a replacement but after hearing you also have two different keys removes this suspicion.
You can see the slight differences like the curved bottom edge where the black plastic button area meets the metal, the manual key release switch being on the opposite side and the key that works for everything has a "U" marking on the manual key. Otherwise, they both look like original/official keys to me.
I'd love to hear from original owners about what their keys are like! Obviously, would love to figure out why the left key doesn't work for everything too.
Doors closed
Key in the ignition, position 2
Press brake and select reverse
Select passenger side mirror on the door switch
Adjust mirror as needed
Press M, then number to store along with your personal setting. Recall that setting will store ALL your favorite positions: seat , steering wheel position, and side view mirror .
Return door switch mirror setting back to neutral
Once stored, select parking. Side view mirror should return to previous position
Now test. Engine ON, press brake, select reverse, wait for mirror to stored position.
Do not recall if W211 has settings per key. Recent models have a different settings per key




Obvious differences are the round panic button, and mechanism for the battery (sliding board).
The second key is not original, but bought from the MB dealer and looks like yours. That was the next generation keyfob. Similar to the one for the 2014 W212 and 2015 W166 we have.
The Best of Mercedes & AMG



Obvious differences are the round panic button, and mechanism for the battery (sliding board).
The second key is not original, but bought from the MB dealer and looks like yours. That was the next generation keyfob. Similar to the one for the 2014 W212 and 2015 W166 we have.
Makes me wonder if the keys don't actually come with specific cars and maybe the dealer programs them and has them cut?
Whatever the case, it probably means both my keys are “authentic” but one is just defective and needs to be replaced?






Not the style or brand I had in mind but I’m very happy with the decision and results. I wanted the same OEM size (18x8.5) with slightly more aggressive offset (32 vs OEM 38) and lighter (>19lbs vs OEM ~30lbs). Losing around 10lbs per corner is the greatest upgrade and very noticeable improvement in braking, handling, comfort and acceleration. I saw the OEM sport wheels listed at 25lbs but when I weighed mine, they all came in around 30lbs so that spec out there is wrong for whoever is interested. 28lbs if being generous based on possible scale and other discrepancies. Either way, glad to have those anchors off the car.
Last edited by Slave IV; Feb 7, 2026 at 06:56 PM.







