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2014 E550 Not working correctly after battery died

     
Old Dec 1, 2025 | 11:21 PM
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Mercedes e550 4matic
2014 E550 Not working correctly after battery died
My 2014 E550 started acting up after battery died and I took both batteries out and fully charged them. After installing them the transmission wont shift out of park, air condition and air condition controls do not work also , stereo , driver. headlight , abs, interior dome lights and wipers are not working now. Also Got a bunch of dash lights that were not on before the battery died. Any idea what could be wrong? Im pretty sure there is a module or modules related to all this.
Thanks in advance

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Old Dec 2, 2025 | 12:01 AM
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W212 MY'14 M276-3.5NA @75kMi
SAFETY LOCK DOWN
Reconnecting both battery power has a proper order and timing.

Now I believe your ISM has triggered its safety lock.

What scanner are you using to work with this car ?
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Old Dec 2, 2025 | 12:05 AM
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Mercedes e550 4matic
Originally Posted by CaliBenzDriver
Reconnecting both battery power has a proper order and timing.

Now I believe your ISM has triggered its safety lock.

What scanner are you using to work with this car ?
I am using an autel scanner
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Old Dec 2, 2025 | 12:07 AM
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W212 MY'14 M276-3.5NA @75kMi
Originally Posted by e550erg
I am using an autel scanner
An Autel should help you survey all the faults.
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Old Dec 2, 2025 | 12:09 AM
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Mercedes e550 4matic
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Originally Posted by CaliBenzDriver
An Autel should help you survey all the faults.
On the scanner I cleared one by one on the control units that had dtcs and nothing changed.
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Old Dec 9, 2025 | 04:41 PM
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W212 MY'14 M276-3.5NA @75kMi
Originally Posted by e550erg
On the scanner I cleared one by one on the control units that had dtcs and nothing changed.
that was a good step to confirm hard faults.

Pls post the list of DTC/faults with status and english descriptions
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