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Discussion Starter #1
I have an 05 V.....Im having some issues with it...Minor stuff really...But annoying.

1. The alarm stopped working...The key fob seems like its dead...Both of them.

2 The tire pressure sensors dont register...Just shows lines instead of numbers....Im not sure if the 2 are related.

It went to the dealership about a month ago for the same 2 issues and they fixed it....It worked great for a couple weeks now the same thing.

What could cause this....I know the dealer will reset the computer but dragging it up there all the time scks.....She will be garaged real soon so i want to get it right before the snow flies.
 

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2017 Camaro ZL1; 2011 CTS-V sedan; 2004 Lightning
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:hmm:
 

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2004 CTSV
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The problems won't go away just because you ignore them. Electrical gremlins are the worst.

Get the car back to the dealer and let them check it out. If it's not an intermittent problem they should get it fixed.

This also logs the problem w/ Cadillac & GM. In case you want to escalate later.

Tony
 

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2017 Camaro ZL1; 2011 CTS-V sedan; 2004 Lightning
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OK... both of these symptoms have a couple of components in common: the RFA antenna grid and the antenna module. First, make sure that the RFA coax connector is actually connected to the antenna grid. Get into the back seat and look at your rear window: You'll see two wires with coax snap connectors coming out of the headliner: the one in the center is AM/FM; the one on the right is the RFA and is used by both the keyless entry and the TPM sensors. Make sure this is tightly connected to the grid post. If it is, take it off and spray both it and the grid post with contact cleaner (be careful with this if your windows are tinted).

If that doesn't do it you could pull the antenna module and make sure the connections are all tight, but I'd let the dealer do that if I were you.
 

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BTW: if you seem to have fixed the keyless entry but not the TPM, keep in mind that the TPS only transmit to the TPM every 60 minutes when the car is still. Take her out and get her up over 20 MPH and the TPS should start transmitting.
 

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FAQ is your Friend
CTS-V
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If what lawfive says doesnt work...

Both of these fucntions are controlled by the RIM (rear integration module)....

Sounds like either yours is bad or it is having communication problems... This sounds to me like a dealer replace...

Funny side note: Dreamin gave me one of his TPS sensors a few weeks back... I stuck it in my glove box in case of emergency... Funny thing is that when he parked his car next to mine this past weekend at the socal meet, it registered on his car even though it was in MY glove box... I found that funny... It did clear right dreamin?

Reed
 

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Leed, you supposed be frying China, round eye! What you doing here? Be gone! Kai pow!!

And based on what Reed says, I agree: you might need a RIM job. :wes: :gnome:
 

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Discussion Starter #9
lawfive said:
OK... both of these symptoms have a couple of components in common: the RFA antenna grid and the antenna module. First, make sure that the RFA coax connector is actually connected to the antenna grid.
Great advise.....I actually took a look at the connection ...Sure enough it was disconnected.I had the battery disconnected so i reconnected it and the RFA plug.The alarm system is now working.The TPM was still showing the lines and no #'s......I took it out on the road....By the time i got out of the driveway the TPM was reading correctly....Thanks alot.My local Caddy dealer is a dirty rat trap....When i bring the car for sevice i have to drive about 100 miles to get to a dealer with a clean shop.....Thanks Again.
 

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CTS-V
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BadAssCTS-V, where are you located? If you're anywhere close to VA, try Lindsay Cadillac in Alexandria, VA.
 

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CTS-V
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lawfive said:
Leed, you supposed be frying China, round eye! What you doing here? Be gone! Kai pow!!
And based on what Reed says, I agree: you might need a RIM job. :wes: :gnome:

I leave tomollow grasshopper... Much packing and work i have to do today...

nice call on the antenna grid... You are correct sir....

Reed
 

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So from what I read here, if I disconnect the RFA plug then the TPS doesn't work...so, when track-day comes if I disconnect the plug in the morning and drive a while then I can run higher pressures and not have the TPS nanny pull Comp/nanny-off mode?
This could be a good thing?No?
-ace
 

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Could be...
 

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BadassCTS-V said:
Great advise.....I actually took a look at the connection ...Sure enough it was disconnected.I had the battery disconnected so i reconnected it and the RFA plug.The alarm system is now working.The TPM was still showing the lines and no #'s......I took it out on the road....By the time i got out of the driveway the TPM was reading correctly....Thanks alot.My local Caddy dealer is a dirty rat trap....When i bring the car for sevice i have to drive about 100 miles to get to a dealer with a clean shop.....Thanks Again.
No charge. As Denniscars says, speak kindly of me.
 

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'05 CTS-VM 51 track days in Maggied V & 82 in Atom 2 in Volt
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ace996 said:
So from what I read here, if I disconnect the RFA plug then the TPS doesn't work...so, when track-day comes if I disconnect the plug in the morning and drive a while then I can run higher pressures and not have the TPS nanny pull Comp/nanny-off mode?
This could be a good thing?No?
-ace
:hmm: I are confused, I didn't use comp mode at the track because based on all these I didn't think it worked with my dunlop race tires which run at 47-51psi.

Last time out I thought I'd try and I got a Comp mode screen and pressed OK and it seemed to work. The ! ! ! flashing gets old but I want to know if I'm losing pressure or if I'm scrubbing the tires too hard the temp goes up. Does it disable it at low alarm or both?
 

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This thread both amazed and impressed me at the same time. Amazed that there are still dealers out there that can't properly diagnose and fix a vehicle in their possesion. Impressed that our internet sleuths do so in a matter of minutes. :worship:
 

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I know this has been answered already but just for reference, I had one that was operating in a similar fashion.
The RKE would not work, the remotes would not program and the TPM would not relearn.
A few checks showed that the antenna module had failed.
They use the same module for the radio antenna and it transmits data to the RIM for system operation.
It's up above the headliner under the interior lamp in the back seat.
Yes, it's a good idea to check all the connections to the buttons on the glass first.

Nicely done fellas.
 
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