To remove the battery from a Citroen C3 keyfob. Firstly unloop the key from an keyring. Remove the cross head screw from near the metal part of the key Use a small coin or flat bladed screwdriver to lever apart the two halves of the clamshell. There is an easy access point in the clamshell at the point the key attaches to the keyring. You will then see the battery on the circuit board.
If it does it more whilst reversing then on my C4 GP it was a problem with shape of rear brake pad , the pad had a lip on it which was a bad design.Took it to a Citroen franchise who admitted the fault but refused to swap pads under warranty. Citroen stopped this by greasing the pads (some thing to be done by professionals no doubt) the squeal then went away. However on changing…
== == When it's on, you can type with the numbers that are on the side, but if it's off then you can't use the number pad The reason you might want to do this is, originally many keyboards did not have a number pad that was separate from the arrow keys. The Num Lock key was used to toggle between arrow and number modes for the 10-key pad.
To see yearly totals: Turn key to Z Type 99 into the number pad Press the Amount Tend Total key To clear the yearly totals: Turn key to PRG Type 777777 into the number pad Press the Amount Tend Total key Type 0 into the number pad Press the non tax key This will give you a receipt for the entire year and clear it for the next year.