Wife's keyless remote says battery low, only been 5 months

[Lonwa]

Hello,

I thought I recalled the key-less remote for MBs were rechargeable? Is that the case for the b-class? I don't have the manual handy or else I would check it. Any help would be appreciated.

Thanks

Lonwa

 

[JeffRay]

Easy to replace battery. Look for YouTube video. Likely the same for all MB keys.

 

[sendler2112]

It is normal for these keys to go through batteries when using keyless go.