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2015 GLA 45 AMG
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Discussion Starter #1
If you get this message and the car shuts off or will not start: turn the car off, wait for a few seconds, restart.
The reason you are getting this error message is because the secondary Aux battery in your Mercedes has died. This is not a major issue, just annoying as start/stop will not work. Drive the car in normal or sport mode so the car doesn't shut off.
Simple fix: go to Autozone and let them know the year and make.
The Aux battery is under the passenger carpet and under the glove box.
To access make sure you remove the cabin air filter cover.
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Look at you kickin off with a Concise, Useful, Visually enhanced post !!

Very Nice

now fix your Handle, it looks like my aunts first password
 

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fyi
I took mine out 3-4 years ago and all good, just a message pops up every time I start the car saying 'aux battery malfunction.' Click the back button and it clears and doesn't come back until you restart the vehicle.
The aux battery supports start/stop and brake hold, both of which I could care less for.
 

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Is the car shown your 2015 GLA45, or is it a 250?
My 2019 looks completely different in this area.
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