Key fobs
Thread Starter
Heel & Toe
Joined: Apr 2015
Posts: 20
Likes: 5
From: Florida
Key fobs
I purchased a 99’ vert at Mecum this year, and have been replacing things it needed,like lights,convertible top,new seats. Now the simplest thing is driving me crazy. I purchased new key fobs because they didn’t come with the car. I’ve done the programming routine with no luck. The system doesn’t see them. The tpms is working when I drive, so I know the RFA works. I have two questions!
First, does the tpms show tire pressure when the car is “off “ but the key is in the “on” position . Mine doesn’t. Is this a RFA issue?
Second, could it be I purchased the wrong fobs? They came from GM
First, does the tpms show tire pressure when the car is “off “ but the key is in the “on” position . Mine doesn’t. Is this a RFA issue?
Second, could it be I purchased the wrong fobs? They came from GM
Melting Slicks
Joined: Jun 2017
Posts: 2,568
Likes: 1,183
From: Conyers Georgia
If I'm not mistaken, tire pressure is only displayed after car has been put in motion. Compare the part number on the back of the good FOB with the new ones. I am assuming the batteries are new.
Drifting
Joined: Feb 2003
Posts: 1,761
Likes: 235
From: North Carolina
The GM part number for the 1997-2000 model years is GM Part #: 19299230, C5 model years 2001-2005 have a updated RFA system with different TPMS sensors and different key fobs
Regarding the TPMS - Turning the key to "on" will not display tire pressure, The sensor basically go to sleep after the car is stationary for a period of time. They will begin to display pressure shortly after the car starts moving.
Regarding the TPMS - Turning the key to "on" will not display tire pressure, The sensor basically go to sleep after the car is stationary for a period of time. They will begin to display pressure shortly after the car starts moving.
Le Mans Master
Joined: Dec 2017
Posts: 5,630
Likes: 3,333
From: Virginia
2021 C5 of the Year Finalist - Modified
St. Jude Donor '21-'22
As others have stated, you need to make sure you have the earlier fobs (which are unfortunately more expensive). The older fobs have passive keyless entry. The newer ones do not. If the fobs you have don't have a passive keyless entry switch on them, you likely have the wrong ones.
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The GM part number for the 1997-2000 model years is GM Part #: 19299230, C5 model years 2001-2005 have a updated RFA system with different TPMS sensors and different key fobs
Regarding the TPMS - Turning the key to "on" will not display tire pressure, The sensor basically go to sleep after the car is stationary for a period of time. They will begin to display pressure shortly after the car starts moving.
Regarding the TPMS - Turning the key to "on" will not display tire pressure, The sensor basically go to sleep after the car is stationary for a period of time. They will begin to display pressure shortly after the car starts moving.