CLS Coupe (C219) Discuss the CLS Coupe.

No battery in car and locked out of trunk

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Old Jan 31, 2025 | 05:23 AM
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No battery in car and locked out of trunk

Battery lockout but more severe than the average issue..

Well my battery died the other day and after stuggling with a jumper box I was able to get the car to fire up and take the battery out of the trunk.

I took the battery in for recharging at the auto store and the the trunk closed while I was gone

Now I can’t get the car to power up with the jumper box anymore I believe since the battery is no longer connected in the trunk.

I tried the fuse box jump, tried putting juice to the alternator with the jumper box but nothing works.

I resorted to ripping out the psssenger floor board and looking for the power connections under then and I think I see the correct got and ground wires but nothing happens

Please I am in desperate need of help!

I know I was jumping the wrong wrong wire but is the larger one the correct wire and should it power up the car immediately or will it take a while?
I know I was jumping the wrong wrong wire but is the larger one the correct wire and should it power up the car immediately or will it take a while?
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Old Jan 31, 2025 | 08:31 AM
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G550
"Jumper box" -- are you referring to a battery maintainer?
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Old Jan 31, 2025 | 08:57 AM
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2011 CLS550
there is a little tab on your keyfob, press it to the side and you can slide out a physical key, under the trunk lid there is key slot. turn that til you feel it pop the latch and the trunk will open without battery power
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Old Jan 31, 2025 | 09:11 AM
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2011 CLS550

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Old Jan 31, 2025 | 09:12 AM
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2011 CLS550
you can see the little slider release tab on the bottom in this picture. you simply hold that to the side and the physical key slides right out
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