My Peugeot 207 is completely unresponsive - everything from the eloectronics to the engine. Key won't work and have tried the spare. Any help would be appreciated

you can get guide from many sites.. i know few
error codes/ fault codes, wiring diagrams, schematic diagrams, torque specs, engine info, switches functioning, assemble, disassembly, complete refurbish, repair, installation every single thing is covered
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See this site for possible solution:
How to reprogram Peugeot 207 car key after changing plip battery Yahoo...

How to reprogram Peugeot 207 car key after changing plip battery Yahoo...

if in a wet clime then i suspect that teh cables have rusted up

Both radio key and manual rely on the car battery to trigger the central locking == if the battery is 100% flat you can't get in ... I assume by now you have called the AA (or garage) .. if not, you may have to crawl under the car with a stick to release the bonnet lock

try to clean both side of the key where the little resistor (some people call it chip)with rubbing alcohol
or try your spare key
you can check the resistor with DVOM (digital volt,ohm meter)
put black lid on one side and red on the other side while set on ohm or kilo ohm
if it shows it is open ,you need new key
don't let lock smith guy or dealer say it need to programmed
find the right value of resistance and get on eBay

all it is, just resistor to complete the vat circuit,and tell pcm to send the voltage to your starter solenoid

This is a new one on me try the spare key and see what happens

yes it coud the battery, the possitive and negative cables or the starter solenoid valve

These vehicles use Fords Securilock transponder system to prevent vehicle theft. Basically, there is a little radio chip in the key that transmits a code to the computer when you start the car. If this code doesn't match the computer, the computer disables fuel and spark so the engine won't run. If you have a spare key, try that to see if it works. If it doesn't work, then the Securilock system needs service. Unfortunately only the dealer can service this system because it is integrated into the vehicle computer.

If your spare key works, then the key you tried to use has a damaged transponder and the key needs to be replaced. If you don't have a spare key, contact a locksmith and have them make you a new key. I have to warn you, transponder keys are not cheap. They can cost easily $75 and some even go for $150. But, that is probably cheaper then having Ford make one and even if the spare doesn't work, when you get the system fixed by the dealer they can program your spare key as well so you don't waste the money on the key.

hallo
remove two bolts from behind
Marko

I HAVE A 2007 207.THE FUSE BOX IS LOCATED ON THE RHS OF THE ENGINE COMPARTMENT.FUSE NO 3 10AMP.I REPLACED FUSE ON MINE AND WORKED FOR A COUPLE OF DAYS AND PACKED IN AGAIN.AM HAVING IT DONE TOMORROW UNDER WARRANTEE 13/1/09.THIS APPEARS TO BE A COMMON PROBLEM