It's worth a try if you know the procedure for safely disconnecting the battery. Having said that I've disconnected mine a few times and only had to reset the clock. Last time I did it it cleared an engine fault warning

 

I would appreciate it if you tell me the correct procedures.
Thank you.

 

Method for unplugging the battery:

Before unplugging the battery, turn off all gadgets and lights, closing all the doors and unplugging any kind of diagnostic tool. The drivers side window has to be kept open for any kind of requirement.
Turn off the ignition and take out the key following which unplug the battery after an interval of 3 minutes.
The BSI needs to be taken to Sleep mode or Active Economy mode, during which nothing in the vehicle should be operating. Even the bonnet should not be opened that time as it can ‘wake up’ the BSI if the vehicle has got an alarm installed. For batteries under the bonnet, the bonnet should be opened and left up before allowing the BSI to go to Sleep Mode. During this 3 minute interval, use of any remote control central locking gadgets for other vehicles should be avoided in the vicinity of the concerned vehicle.
Method for connecting the battery
:

The following procedure is for reinstalling the battery connection unless told otherwise by Peugeot or Product service. Failure to follow this procedure may result in damage to the BSI’s embedded software during reconnection.

All the doors have to be closed with the ignition key turned off and the key taken out.
Now without opening the doors, replug the battery and wait for 10 seconds.
Turn on the headlights, turn on the engine and inspect the system’s functioning.




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Its in the FAQ. Please take time to read it.

http://www.peugeotforums.com/forums/introductions-28/brief-faq-guide-new-members-83170/#post529130

 

Thank you.I will give a try and tell what happen.

 

If you have the handbook, also available as a download, it is explained in there. DO NOT forget to keep a window open!

 

I had to change the battery. The light went off after the new batt installed and also the driver door handle sensor started to work again.( it wasn't working ).common issue with 508.

 

Hi, i am now getting the same warning light , my 508 GT is now 5 years old so it is time for a new battery and a new battery will properly solve all the small electrical problems on the 508, on the GT it does not look easy to remove the battery it been covered in wires and fuses, did you do it yourself.

 

The fuse boxes unclip and you can pull them back far enough to lift the battery out. There was one plug on a sensor on a battery lead I had to disconnect

 

Hi, do you have to go through the battery removal safety procedure as stated above by Chauhan every time you disconnect the battery, cheers.

 

On my SW Active I got away with just resetting the clock.

 

Warning light gone, i just quickly dis-connected then re-connected the battery.