Possible fault with alarm/immobiliser body unit, both fobs ahve new batteries and have been sync'd as per owners manual
This is a long shot but worth trying as it is free:
Disconnect both leads from the battery, contact the two removed leads together (this will diffuse the ECU memory and re-boot the system)
leave for a few minutes then reconnect.
(The above can lose a radio code if applicable)
This can reconfiger the systems and sort out a multitude of issues.
Hope it sorts it out for you.
SOURCE: changed battery in key fob now unable to turn
there will be a combination of button presses required to reconfigure your fob to the immobiliser. you dont need to get it recoded so dont pay for it. try these:
hold the a button down for ten seconds until the light comes on constantly. then press it twice quickly and it will reprogram.
or press lock about ten times, then open ten times. this should work.
i had this problem on a rover and just pressing the buttons loads of times may allow it to be reprogrammed.
also check the battery isnt upside down in the fob.
SOURCE: my Porsche Key fob no longer unlocks the doors
Insert key into door barrel or ignition lock and turn key, whilst doing this press the unlock/lock button, the led on the dash should flash to indicate this has initialised the key to the car, then remove key and test operation of remote. If this fails then a new remote plus coding to the car by your dealership is needed
SOURCE: hi,immobiliser problem?battery went flat,,managed to
Hi it sounds like you have done everything you can do, it now looks like your going to need to get the immobilizer reset, this can be done at most garages but its best if you shop around to see the best price you can get as its not cheap.
have you tried locking the door with the key and then opening it with the key then try the car see if it will work.
failing that its going to need the imob re-programming so that it accepts your key fob, it may just be that you need the fob replacing as the chip inside could have failed they will be able to test all this for you.
let me know if you need further assistance, not that theirs much more i can do without being their with the equipment to test the immobilizer, hopefully it will just be the fob that needs replacing.
you could just try one last thing when you get in the car and put the key in the ignition try holding the fob as close as you can to the ignition barrel as this is where it picks the signal up from so try holding it close to their and see if that then lets you start the car
failing that its going to be a trip to the garage.
plz rate this solution as i have a whole page of unrated posts, thanks
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