2009 C63 push start smart key. Is not too smart




checked main battery, was at good 58% on tester, old battery. So replaced. Replaced battery in fobs, in the car. Still nothing. Checker antenna fuse 7.5 amp, good fuse.
what’s active when get car:
Speedo lights up, lock unlock, trunk all work and the radio works. Windows don’t work
steering is NOT locked!
key for seem to be ok with flash red when buttons activated. Infrared tests out ok.
took the shifter out of park and pushed car. Nothing. Have Not checked brake light switch
while messing about one fob flashed out a repeated code on red light on pause, then 5 flashes. Couldn’t find anything about this
suspecting the ESL. has gone!
is there anything else I should be checking doing before I have it towed 300 kilometres to Mercedes Thanks




checked main battery, was at good 58% on tester, old battery. So replaced. Replaced battery in fobs, in the car. Still nothing. Checker antenna fuse 7.5 amp, good fuse.
what’s active when get car:
Speedo lights up, lock unlock, trunk all work and the radio works. Windows don’t work
steering is NOT locked!
key for seem to be ok with flash red when buttons activated. Infrared tests out ok.
took the shifter out of park and pushed car. Nothing. Have Not checked brake light switch
while messing about one fob flashed out a repeated code on red light on pause, then 5 flashes. Couldn’t find anything about this
suspecting the ESL. has gone!
is there anything else I should be checking doing before I have it towed 300 kilometres to Mercedes Thanks


