If the battery has been out of the key fob for too long the fob loses its program and the car will not start.
Peugeot will try to charge £48 for a reprogram but you can get around this by: -
1) Turn on the ignition
2) Hold down the close button for a few seconds
3) Turn off the ignition and remove the key
4) Start the car
The above can be found on page 19 or 20 of the 407 user manual
you need a key code, and even then it can only be coded by an authorised dealer
How do you program a key fob to a 2003 Chevy Malibu
To program any kind of key fob you have to take it to a dealership.
How do I re program my key fob for renault laguna estate 1997?
To add a new key fob, take the vehicle and the key fob to an authorized dealer. To re-program a key fob after replacing it's battery, open the key fob, then read and follow the instructions inside.
http://www.ehow.com/how_7456283_program-key-fob-harley-davidson.html
The key fob programing requires the dealer's scan tool.
It is possible to program one key fob to use on two different cars. If the key fob uses a primitive fixed code system, programming two cars will not work.
How do you program the remote key fob on a 2005 Chevy Malibu maxx
How can i program 07 chvi van key
how do i program keyless remote for 2000 Buick LeSabre
trying to set up and program 2003 Nissan altima key fob