Mercedes-Benz C-Class Coupe 2023 Operator's Manual page 406

404 Display messages and warning/indicator lamps 404
SmartKey Smar tKey
Display messag Displa y messages es Possible causes/conseq P ossible causes/consequences and
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* Have the SmartKey replaced.
Obtain a New Key
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* The SmartKey battery is discharged.
Replace Key Battery
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* The SmartKey is currently undetected.
Key Not Detected (white
display message)
uences and M M Solutions Solutions
Visit a quali ed specialist workshop.
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Replace the battery ( page 65).
/
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Change the location of the SmartKey in the vehicle.
#
If the SmartKey is still not recognized, place it in the slot for starting with the SmartKey (
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page 130).
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