If your key will unlock the doors but wont start the car - in other words the car doesnt recognise the key its likely the transponder coils gone .
My spare was exactly like this so ordered a coil from here
Mercedes W202 W203 W208 W210 W211 Antenna coil Transponder Key Fob Repair | eBay
It arrived today so i fitted it and guess what ----
Key now works fine . these are deffo worth a try for £6.90 inc. post
Saved me a small fortune

My spare was exactly like this so ordered a coil from here
Mercedes W202 W203 W208 W210 W211 Antenna coil Transponder Key Fob Repair | eBay
It arrived today so i fitted it and guess what ----
Key now works fine . these are deffo worth a try for £6.90 inc. post
Saved me a small fortune



