C-Class (W206) 2021 to

Airbag replacement

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Old Feb 28, 2025 | 04:04 AM
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Sidian's Avatar
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Airbag replacement

Hello,
Under the sun angle noticed a nasty scratch on my steering wheel airbag and since I'm pedantic when it comes to cars at first thought to replace only the cover - However it will be bit of integration into airbag I'v decide to go with full airbag as it's plug and play replacement.
The question that i have what is the best way to replace it without causing any fault/codes - can i disconnect battery in the back and will do the job or should I be aware of something else?

Side question is it safe to disconnect the battery for those models - as car has many systems working in the background?

Thanks, and much appreciate for your suggestions.
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Old Mar 1, 2025 | 03:12 PM
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Originally Posted by Sidian
Hello,
Under the sun angle noticed a nasty scratch on my steering wheel airbag and since I'm pedantic when it comes to cars at first thought to replace only the cover - However it will be bit of integration into airbag I'v decide to go with full airbag as it's plug and play replacement.
The question that i have what is the best way to replace it without causing any fault/codes - can i disconnect battery in the back and will do the job or should I be aware of something else?

Side question is it safe to disconnect the battery for those models - as car has many systems working in the background?

Thanks, and much appreciate for your suggestions.
most times you can just disconnect the battery and itll be fine. but sometimes the airbag light will still come on when its all plugged back in and will require you to clear the code.takes a couple minutes to clear it.
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Old Mar 2, 2025 | 07:27 AM
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Thanks, is there any other risk that some of the system will fault during disconnection the battery?
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Old Mar 2, 2025 | 08:00 AM
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Originally Posted by Sidian
Thanks, is there any other risk that some of the system will fault during disconnection the battery?
Usually certain calibrations but likely aux battery will provide enough charge to maintain them especially if you don't disconnect for hours and days for example.
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Old Mar 3, 2025 | 06:38 PM
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Originally Posted by Sidian
Thanks, is there any other risk that some of the system will fault during disconnection the battery?
no
your car might reset some of the systems back to factory settings like radio functions for example, but there really arnt risks to unhooking the battery. just dont install the battery backwards if you remove it for whatever reasons. just unhook one lead.
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