Does the ign. key switch light up
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Heel & Toe
Joined: Aug 2011
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From: Houston Texas
Does the ign. key switch light up
My key switch round plastic plate crumbled apart. I purchased a new one from dealer. It snapped in place fine. It has a coil of wire or maybe fiber optic around the plate that is clipped to the plate. Is the plate supposed to light up? Acc, off , on start. Thanks
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Nope....no lights
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Unfortunately, no. Would have been a nice touch.
Thread Starter
Heel & Toe
Joined: Aug 2011
Posts: 21
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From: Houston Texas
does the ign. key light up
Thats what I needed to know. Thanks for the info. I had thought that may have been a fiber optic wire coiled up front. I now understand it is for the vats which I had thought was resistance pellets in the key. I know the newer cars no longer uses vats type key with pellets but a chip in the key that is read by a coil or antenna.
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From: Horncastle Lincolnshire, England
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Thats what I needed to know. Thanks for the info. I had thought that may have been a fiber optic wire coiled up front. I now understand it is for the vats which I had thought was resistance pellets in the key. I know the newer cars no longer uses vats type key with pellets but a chip in the key that is read by a coil or antenna.
Pro
Joined: Oct 2009
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From: Centennial Colorado
As to the light? I'd be for it, wouldn't be too hard to make work.
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From: Horncastle Lincolnshire, England
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Just to clear this up.....there is no signal sent from the VATS pellet. It is just a chunk of carbon with a known but specific resistance value. When inserted into the ignition, the resistance of the pellet is read by becoming part of a circuit in the VATS Decoder module, (think of the module as a multi-meter) and if of the proper value the module applies a ground to the Start Enable Relay coil which allows cranking voltage to the starter, and a Fuel Enable signal to the ECM. This signal allows the ECM to operate the fuel injectors during cranking.
"The Body Control Module (BCM) contains the theft deterrent system logic. The BCM reads the key code from the ignition cylinder when the ignition is turned to the START position. If the code is correct, the BCM will enable the theft deterrent relay and will send a fuel enable signal to the PCM via the class 2 serial data circuit.
If the BCM receives the wrong code, the BCM will immediately go into tamper mode. The tamper mode will lock-out the vehicle starter and fuel injectors for 3 minutes. The SECURITY indicator will flash while the BCM is in tamper mode."
Last edited by DeeGee; Feb 16, 2012 at 01:59 PM.
Drifting
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From: Seattle WA
Jeff in Den is correct, DeeGee. The "Key Code" it's talking about is really just a resistance value. When you need to order a replacement key, you need to figure out what resistance is currently in your VATS pellet by putting a multimeter across the pellet and reading resistance, and then order a key with the same resistance (within the spec).
This is why you can remove the VATS system entirely by wiring in a resistor of appropriate value.
This is why you can remove the VATS system entirely by wiring in a resistor of appropriate value.
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From: Horncastle Lincolnshire, England
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I think we are all agreeing violently
Maybe its a translation thing?
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
Maybe its a translation thing?
VATS key codes:
The BCM measures the resistance value of the resistance of the pellet and allows the fuel system to operate. If it is within +/-10% the car will start.
To check your key value:
Set your digital volt meter to “ohms mode” and measure the value across the pellet.
The 15 resistor codes are:
Resistance Value (Ohms)
1 0.402 (acceptable range .386-.438)
2 0.523 (acceptable range .502-.564)
3 0.681 (acceptable range .650-.728)
4 0.887 (acceptable range .850-.942)
5 1.130 (acceptable range 1.085-1.195)
6 1.470 (acceptable range 1.411-1.549)
7 1.870 (acceptable range 1.795-1.965)
8 2.370 (acceptable range 2.275-2.485)
9 3.010 (acceptable range 2.890-3.150)
10 3.740 (acceptable range 3.590-3.910)
11 4.750 (acceptable range 4.560-4.960)
12 6.040 (acceptable range 5.798-6.302)
13 7.500 (acceptable range 7.200-7.820)
14 9.530 (acceptable range 9.149-9.931)
15 11.801 (acceptable range 11.320-12.290)
Banned Scam/Spammer
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From: Simi Valley CA
Back on the original topic.. I think you could adapt something like this and wire to the courtesy lights.
http://www.ebay.com/itm/15-WHTE-60mm...t_20048wt_1397
http://www.ebay.com/itm/15-WHTE-60mm...t_20048wt_1397
Tech Contributor
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Back on the original topic.. I think you could adapt something like this and wire to the courtesy lights.
http://www.ebay.com/itm/15-WHTE-60mm...t_20048wt_1397
http://www.ebay.com/itm/15-WHTE-60mm...t_20048wt_1397
Banned Scam/Spammer
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From: Simi Valley CA
