key reader help please

[dieselink]

i have just changed my indicator/lights/radio/cruise control squib/stalks on a 406 2002 2.0 diesel,could not find a 406 one,so i got one from a citreon c5,fitted loverly and every thing works great apart from keeps saying key fault, i e key reader,theres nowt wrong with connections at all,any ideas please,do i have to get it recoded or not.

[steve_earwig]

Did you get to the bottom of this one yet? I'm guessing this is the com2000 you changed, it should fit straight on and work fine (if you got the right one...)

Not sure about this "key reader", it's not one I've heard of. They usually say "immobiliser fault" or some such, there's an aerial around the barrel that picks up the transponder chip in the key, maybe you upset this while you were changing the com2000

[dieselink]

thanks for reply m8,it dose say immobiliser fault,but i dont understand why,it is a com 2000,but of a citreon c5,it fits perfect,so do u think i need to get ecu recoaded to make it work,i have put old com on for now,which works with no probs on the keys,got my head done in,any help would be very greatful for.

[lozz]

check the Transponder ring,

iirc it has 1 Brown wire, 2 blue wires, check and make sure thats got agood conection,
if youve got A spare key take chip out or place key ontop of the transponder pick up ring, and see if it starts,

Bsi Reset might help too,

[dieselink]

the ring must be ok,i have checked it fully,but it works fine with the old com 2000,but not with new com 2000 ?????????????

[lozz]

What year C5 are these parts off,?

[dieselink]

C5 3.0 V6 2002.

[lozz]

No good id say Differnt part numbers,

[dieselink]

what if i buy a new key and get it reprogrammed,would that work and how do i get 4 digit code ????????

[lozz]

im confused, sorry,

does the car start with the original comms stalks on?

if it does id put them back on and source ones with the same part number, itd be less hastle than trying to disable the imobiliser,
tbh icarnt see how theyve imobilised your car in the first place, did you follow the 3 min rule ?

[dieselink]

what the 3 min rule ???? and yes old com 2000 works fine with the key,if the indicator stalk was not broke and flapping around i would not be chaging it at all

[lozz]

3min rule. bsi reset,

send them back mate, get refund and source correct ones,
if you look at citroen xsaras,. not all but some of them have the same ones,

if there imobilising your car id remove them , its not worth the risk of knackering up a bsi imho

[dieselink]

whats bsi meen plz

[lozz]

have a Read.

http://autodiagnos.com/fileadmin/assets ... mplete.pdf