Does immobiliser drain battery?
Yes the immobiliser does drain the battery, how old is the battery? It could be on its way out, it can be a long drawn out process. Best to consider a new one. Its a brand new battery.
Why is my immobiliser not working with a flat battery?
It has been suggested to me that the flat battery has allowed the immobiliser to forget the keys and, even though it allows the doors to unlock and re-lock and turn the ignition on it will not allow it to crank over the engine.
What happens if you have a flat battery?
Having had a flat battery, the usual slow turn over and non firing, a headlight malfunction showed on the dashboard, when i came home and tried to start it the car was dead so i recharged the battery for 24 hours. Tested the battery was showing 12.5 volt charge.
Why is the immobiliser still active after a 24 hour charge?
Thanks for this advise Scudney, they are self levelling, and fully charged after a 24 hour charge the battery still only showed 12.5 volts. The second and most important issue is that the immobiliser is now active and refusing to let the car turn over.
Why does my immobiliser not turn over the car?
The second and most important issue is that the immobiliser is now active and refusing to let the car turn over. It has been suggested to me that the flat battery has allowed the immobiliser to forget the keys and, even though it allows the doors to unlock and re-lock and turn the ignition on it will not allow it to crank over the engine.
What should I do if my immobiliser battery goes flat?
Recharge (or more likely replace) the battery, make SURE to follow the battery disconnect procedure (post 7 in this thread) and resynchronise the fobs. You might need to do the battery disconnect procedure again after fitting a new or recharged battery as letting the battery go flat may have resulted in a loss of data.
Thanks for this advise Scudney, they are self levelling, and fully charged after a 24 hour charge the battery still only showed 12.5 volts. The second and most important issue is that the immobiliser is now active and refusing to let the car turn over.
How to disable the defender immobiliser after battery?
After reconnecting the car battery you need to resynchronise the fobs; from outside the car press the fob lock button at least 4 times (sometimes takes more than 4) until the car doors lock. Unlock, car should start. Unless your connection to the disco has caused some malfunction??? Hi Chaps, appreciate the replies.
How to tell if your car battery is flat?
Flat Battery, Recharge, Then Immobiliser Active Message! Any Clues? Flat Battery, Recharge, Then Immobiliser Active Message! Any Clues? Having had a flat battery, the usual slow turn over and non firing, a headlight malfunction showed on the dashboard, when i came home and tried to start it the car was dead so i recharged the battery for 24 hours.