I have a Renault Megane and the electronic ignition card is starting to 'go' i.e. it keeps saying CARD NOT DETECTED and I have to reinsert it many times before it 'takes'. I have been told this will only worsen until it won't start at all. I made enquiries at the local Renault dealer to discover a new ignition card will cost £250 and take 7-10 days to come through! Is there a cheaper and/or easier alternative to this? (Legal, obviously.)
It is very easy to insert the coin battery in the wrong polarity – I know, I have done it myself. But even in this configuration, when inserted into the key-slot, the vehicle will recognize the card – although you cannot remotely lock/unlock the doors.
If you have to buy a replacement – shop around, my local Renault dealer will supply a replacement for around £150.