W205 key not detected

[tkc]

Hi. Need advice from experts.  Just got a pre owned c180 w205. Today when I try to keyless unlock it won't work so I had to press the fob. When entering into the car the keyless start go couldnt work and showed "key not detected". Fortunately I managed to manually start the car. Can expert please advise on this beside sending it to work shop? Thanks 

[Babolat]

Could it be weak battery? Both your keys cannot be detected?

[tkc]

Yah. Both keys cannot detect. But use fob can operate car door, boot etc no problem but cannot keyless operation n on engine 

[Babolat]

Actually since you said you just got it from used car dealer; For me, I would go back to my dealer to get this checked.

Or could this be a non-keyless entry model, but went for aftermarket alteration? 

Sorry I can't help further as I never had such issue......wish you luck.

[tkc]

No worries. Thanks.  I am sure the dealer won't think this is a lemon law item.. No point going bk to them. I am OK to go workshop just wanting to see if any one has experience or knowledge so at least there is some sense on what's happening. 

Thks