keyfob battery

[monkeyhanger]

Just had a key fob battery warning light on the dash. Quite surprised as the car is only 19 months old and done 19,000 miles. Just goes to show you how much the KESSY system talks to the key compared to standard remote central locking. Must drain the battery (which isn't a tiny one either).

I swapped the battery with the spare key. Can't risk the key dying and not being able to start the car 

Amazed your battery lasted that long - I thought most keyless people got around 4-6 months from their battery. Most traditional key users should see around 3 years from the battery if they only use the one key all the time.

[CraigW]

Just had a key fob battery warning light on the dash. Quite surprised as the car is only 19 months old and done 19,000 miles. Just goes to show you how much the KESSY system talks to the key compared to standard remote central locking. Must drain the battery (which isn't a tiny one either).

I swapped the battery with the spare key. Can't risk the key dying and not being able to start the car 

Amazed your battery lasted that long - I thought most keyless people got around 4-6 months from their battery. Most traditional key users should see around 3 years from the battery if they only use the one key all the time.

Mine is 22 months old and no sign of the battery running out.

[C2K]

Mine needed  a new one this weekend. Got 2 starts warning me about it before it was flat as a pancake. Luckily car was unlocked as I was at work. Only a year and 2 months old,  no keyless entry here.

[itavaltalainen]

I swapped the battery with the spare key. Can't risk the key dying and not being able to start the car 

You can always start the car and get into it - even if battery is flat out dead.
Take cap off lock and just open using the key blade. To start hold the key where the immobiliser reading coil is (that is where key barrel normally lives), it then uses RFID transponder in the key rather than the battery driven active circuit to de-immobilise.