E-Class (W211) 2003-2009

What’s going on with my car

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Old Apr 16, 2023 | 10:59 AM
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Illuzev's Avatar
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W211 E class 350 4matic
What’s going on with my car

Last night get in my 350 e class 2006 and lights don’t come on and the key won’t turn.. (key fob quit working month ago) I find someone to jump it and as soon as I put jumper cables on my battery I know wrong place but it doesn’t work anywhere else but all lights come on and key fob came back to life .. on catch it’s not hooked up to the other vehicle yet. So for twenty min we try and try but eventually the guy that was awesome to help said he had to go. I couldn’t thank him enough and he left as soon as he left I tried one more time I be damned it starts right up I’m hour from home drive home and now key fob doesn’t work for the light and stuff always starts the car can’t lock it? Anybody out there can help?im not mechanically inclined. I’m more like a monkey man suit! So please keep that in mind, and speak in Laymans terms!
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Old Apr 16, 2023 | 11:35 AM
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
Tighten your battery terminals.
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Old Apr 16, 2023 | 11:39 AM
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W211 E class 350 4matic
Did all of that big the key fob?

Key fob still won’t lock and u lock
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Old Apr 16, 2023 | 09:04 PM
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From: MA
2008 E350 4Matic, 2011 E350 4matic
Did you change the batteries in the key fob?
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Old Apr 17, 2023 | 04:37 PM
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W211 E class 350 4matic
Did I change batteries in fob

No I did not there is no way to get into it .. plus for past three months no nothing no unlock nor lock and not red light at all now since the post. I did clean up the terminals but why would that effect my the fob ?? Unless the car charges the battery in the fob, could it be my alternator,
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Old Apr 17, 2023 | 07:43 PM
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From: MA
2008 E350 4Matic, 2011 E350 4matic
Originally Posted by Illuzev
No I did not there is no way to get into it .. plus for past three months no nothing no unlock nor lock and not red light at all now since the post. I did clean up the terminals but why would that effect my the fob ?? Unless the car charges the battery in the fob, could it be my alternator,
There's lots of videos and explanations on how to change the key fob battery. It's a pretty standard thing to do. I do that to mine every 4-6 months, but I have keyless go so they don't seem to last as long. My guess is that your car battery is dead. Take it out and put it on a charger or if you don't have a charger, you can remove it and take it to an auto parts store and they will charge it up for you. It could be the alternator too which is why the battery is dead or that the battery is just dead. Usually if the battery was fully charged, you could have the auto parts store do a free charging test where they will determine if you have a bad battery or alternator. You can usually tell yourself by switching to the temperature display on the dash and hitting the reset button 3 times and it will display the battery voltage. If you don't get above 14 while driving it, there's probably something wrong with the alternator and if you get really low battery voltage display, then the battery probably needs charging or it's bad. Some other possibilities are loose grounds like a weak battery terminal connection. Going to have to do some diagnostics, some things just can't be done remotely.

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Old Apr 17, 2023 | 07:58 PM
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W211 E class 350 4matic
Thank u very much
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