Dead key
Moderator: RichardW
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Paul-R
- Donor 2023
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Re: Dead key
You put the working key into the ignition, turned it and then went through the procedure on the non-working key?
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.
Inside every old person is a young person wondering what the hell happened.
"Trying is the first step towards failure" ~ Homer J Simpson
Inside every old person is a young person wondering what the hell happened.
"Trying is the first step towards failure" ~ Homer J Simpson
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Homer
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Re: Dead key
But surely it will be powered by induction (hence the transponder coil), not from the fob battery.GiveMeABreak wrote: ↑14 Nov 2017, 11:02 Hmmm... Not so sure Paul - this extract (for the X7 at least) would indicate that the Ignition Key Transponder also has some ability to perform a calculation. Probably another reason why the X7 only has the electrical remote fob if this is the case.
First - clarification of the terminology using this diagram:
X7 Ignition Key Transponder.JPG
(1) Ignition key with integral transponder.
(2) Transponder coil .
"a" Ignition key transponder.
Anyway that seems to be proven by the car starting with the fob battery removed.
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Paul-R
- Donor 2023
- Posts: 6935
- Joined: 07 May 2009, 16:24
- Location: Wirral, NW England; Vaucluse 84, France
- Lexia Available: Yes
- My Cars: 2015 1.6 Blue HDi 120 Peugeot 308 Active SW
2013 2.0 HDi 163 C5 Exclusive Tourer
2003 2.0 HDi 110 C5 Exclusive Estate (Gone)
2001 2.0 HDi 90 Xsara Estate (Gone) - x 1379
Re: Dead key
That's for the transponder chip to be interrogated which is completely separate from the lock/unlock mechanism.
Whilst we all agree that ideally the key should be re-paired my contention is that it's not necessary if only the lock/unlock is needed.
Whilst we all agree that ideally the key should be re-paired my contention is that it's not necessary if only the lock/unlock is needed.
The battery is ONLY for the lock/unlock. As you say the transponder chip gets its power from the coil.
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.
Inside every old person is a young person wondering what the hell happened.
"Trying is the first step towards failure" ~ Homer J Simpson
Inside every old person is a young person wondering what the hell happened.
"Trying is the first step towards failure" ~ Homer J Simpson