To minimise the possibility of the BSi on the Peugeot 307cc corrupting its own software when reconnecting the vehicles battery, the BSI needs to be allowed to go into 'Sleep' mode before the battery is disconnected.
To safely disconnect the battery on the Peugeot 307cc follow the steps below:
1. With the ignition ON, switch off all equipment, heater, stereo, interior lights etc, Disconnect any add-ons from the 12v accessory socket. Also remove any diag equipment, or components plugged into the OBDII Socket.
2. Exit vehicle, open the bonnet and close the doors leaving the drivers window open.
3. Switch off the ignition through the drivers window and remove the key.
4. Wait a full 3 MINUTES before disconnecting the battery.
NOTES
ALWAYS disconnect any diagnostic equipment.
Do NOT operate any plips/key fobs from other vehicles or interfere with the vehicle in any way during the 3 minute wait. Opening doors or boot, or even just reaching in through the window could prevent the BSi going to sleep.
307cc Battery Re-connection Procedure
When reconnecting the battery on the Peugeot 307cc you should carry out the following procedure, often referred to as a 'soft re-boot'.
Ensure the procedure above for battery disconnection has been followed and importantly all BSi functions were switched off and the drivers side window and bonnet was left open.
1. Close all doors and boot
2. Remove IGN key if left in ignition
3. Reconnect battery. DO NOT open any doors
4. Wait 10 seconds
5. Switch on headlights through the drivers window (you will hear a "bong")
6. Switch on ignition then start the vehicle and check system functions
7. Close drivers window then IGN off. Close the bonnet.