Smart key not working C class

[Paul mckie]

Hello there I have a problem with a Mercedes c class 220 cdi smart key, it will. Not unlock the steering to start the car, the batteries have been replaced in the remote, I don't know if it the remote central locking was working before the batteries were changed but it certainly doesn't now, any thoughts??

 

[bembo449]

I assume this has the docking type key where you plug it in and theres a click ?

 

[Paul mckie]

I assume this has the docking type key where you plug it in and theres a click ?

Yes it is, it has an emergency key blade for unlocking the doors to gain access to the car, you an out the key in but no clicks and you cannot turn the key to unlock the steering

 

[bembo449]

like most merc's then pal , its either the key reader ( where you insert the key ) or the key itself , ive had this on my w203 , the key failed and I had to visit a specialist who repaired it