C220 1996 remote key fobs not working > changed batterys still nothing. tried both fobs has anyone any ideas how to disarm the alarm and just use the keys

 

Changed my batteries CR 2025 on both key fobs (took only a minute or so) Big mistake!!

Initially remote worked but after a few uses red and green lights on door and rear view mirror flashed rapidly, doors opened but car would not start (immobiliser still set), locking and unlocking did not cure the problem, following instructions in handbook for re synchronising key fob had no effect, I found this fix somewhere on the internet,

disconnect main battery for 15 mins place key in ignition and turn on, re connect battery wait for 5 minutes turn off ignition use key fob to turn alarm on then off (red and green lights should work normally) car started. However this fix lasts intermittently sometimes for 2 or 3 days sometimes only for hours, any ideas anyone

Brian
1996 C180

 

i no its a old post but i need to turn off my alarm/immobiliser did you or anyone no how????