RCDLR Replacement
Thread Starter
Melting Slicks
Joined: May 2009
Posts: 2,216
Likes: 638
From: Port St Lucie Florida
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2022 C6 of the Year Finalist - Modified
2021 C6 of the Year Finalist - Modified
Thank you both for your feedback!
Installing stock electronics, along with stock lighting is not an option.
Let me ask - could the upgrades be causing all of the problems below?
Would shielding (if possible) the RCDLR help?
Ongoing issues with the TPMS sensors - sensors won’t accept programming.
Occasional “Service Tire Monitor” DIC message.
XX PSI pressure reading was intermittent - now it’s constant.
No fob detected message appearing more frequently.
U 10000 00 communication fault.
Installing stock electronics, along with stock lighting is not an option.
Let me ask - could the upgrades be causing all of the problems below?
Would shielding (if possible) the RCDLR help?
Ongoing issues with the TPMS sensors - sensors won’t accept programming.
Occasional “Service Tire Monitor” DIC message.
XX PSI pressure reading was intermittent - now it’s constant.
No fob detected message appearing more frequently.
U 10000 00 communication fault.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,564
Likes: 4,034
From: Cape Coral, Florida
There is a TSB regarding this issue...RFI may be causing your issues so without replacing that stuff with OEM you'll just have to deal with it.
https://static.nhtsa.gov/odi/tsbs/20...01252-9999.pdf
https://static.nhtsa.gov/odi/tsbs/20...01252-9999.pdf
Thread Starter
Melting Slicks
Joined: May 2009
Posts: 2,216
Likes: 638
From: Port St Lucie Florida
2025 C6 of the Year Finalist - Modified
2023 C6 of the Year Finalist - Modified
2022 C6 of the Year Finalist - Modified
2021 C6 of the Year Finalist - Modified
There is a TSB regarding this issue...RFI may be causing your issues so without replacing that stuff with OEM you'll just have to deal with it.
https://static.nhtsa.gov/odi/tsbs/20...01252-9999.pdf
https://static.nhtsa.gov/odi/tsbs/20...01252-9999.pdf
I am curious why the problems slowly got worse instead of happening immediately after the aftermarket upgrades were done.
While I did experience an intermittent problem with the TPMS sensor after swapping out the Bose radio, it did not get any worse when the Knight Drive unit was installed.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,564
Likes: 4,034
From: Cape Coral, Florida
No way to shield the RCDLR from the RFI interference?
I am curious why the problems slowly got worse instead of happening immediately after the aftermarket upgrades were done.
While I did experience an intermittent problem with the TPMS sensor after swapping out the Bose radio, it did not get any worse when the Knight Drive unit was installed.
I am curious why the problems slowly got worse instead of happening immediately after the aftermarket upgrades were done.
While I did experience an intermittent problem with the TPMS sensor after swapping out the Bose radio, it did not get any worse when the Knight Drive unit was installed.
You can try using conductive tape such as copper or aluminum...and undoing what you have done will be the only way to know for sure.
Thread Starter
Melting Slicks
Joined: May 2009
Posts: 2,216
Likes: 638
From: Port St Lucie Florida
2025 C6 of the Year Finalist - Modified
2023 C6 of the Year Finalist - Modified
2022 C6 of the Year Finalist - Modified
2021 C6 of the Year Finalist - Modified
Thanks again, guys!
I will try insulating the RCDLR and report back after Sunday.
I will try insulating the RCDLR and report back after Sunday.
Pro
Joined: Sep 2007
Posts: 605
Likes: 18
From: Calgary AB
The 4 FOB antennas are external to the RCDLR, but the service manual is unclear if the TPMS antenna is the same as the glovebox FOB antenna or internal to the RCDLR. So, wrapping the RCDLR in metallic tape, HVAC tape, or even aluminum foil may well help as it will act as a primitive Faraday cage or it may block the TPMS function even more.
FYI, quote from the service manual . . . "radio frequency (RF) interference from aftermarket devices such as 2-way radios, power inverters, cellular phone chargers, computers, etc. High RF traffic areas, such as gas stations which use pay-at-the-pump RF transponders, may also cause interference."
That U1000 code is more concerning though. It generally indicates a CAN bus communication error, and the RCDLR is not on the CAN bus (it has it's own direct connection to the ECU & BCM). You've checked all the master ground points (ie under the battery, etc)?
FYI, quote from the service manual . . . "radio frequency (RF) interference from aftermarket devices such as 2-way radios, power inverters, cellular phone chargers, computers, etc. High RF traffic areas, such as gas stations which use pay-at-the-pump RF transponders, may also cause interference."
That U1000 code is more concerning though. It generally indicates a CAN bus communication error, and the RCDLR is not on the CAN bus (it has it's own direct connection to the ECU & BCM). You've checked all the master ground points (ie under the battery, etc)?
Thread Starter
Melting Slicks
Joined: May 2009
Posts: 2,216
Likes: 638
From: Port St Lucie Florida
2025 C6 of the Year Finalist - Modified
2023 C6 of the Year Finalist - Modified
2022 C6 of the Year Finalist - Modified
2021 C6 of the Year Finalist - Modified
I am happy to report that things are back to normal with respect to my TPMS issues.
It appears that the RCDLR unit is fine!
A lot of research led me to believe it was failing. Fortunately, that was not the case.
As some of you know who’ve been following my saga, (as well as offering sound suggestions and advice), the TPMS sensor would not accept programing.
In addition to not being able to program the sensors, the DIC gave me flat tire symbol along with the service tire symbol.
The DIC also shows XX PSI for all four tires.
A buddy and I were prepared to dig into the dash to gain access to the RCDLR to check the board, as well as attempt to shield the unit from possible RFI interference.
Before doing this, we figured we’d try again to enter learn mode using the programming tool.
This time it worked! We were able to establish communication between the TPMS sensors and the RCDLR.
Happy to say we are back to normal as all four tires now are showing PSI, as well as the DIC error messages disappearing.
Thanks to all who took the time to help me sort through this issue.
It appears that the RCDLR unit is fine!
A lot of research led me to believe it was failing. Fortunately, that was not the case.
As some of you know who’ve been following my saga, (as well as offering sound suggestions and advice), the TPMS sensor would not accept programing.
In addition to not being able to program the sensors, the DIC gave me flat tire symbol along with the service tire symbol.
The DIC also shows XX PSI for all four tires.
A buddy and I were prepared to dig into the dash to gain access to the RCDLR to check the board, as well as attempt to shield the unit from possible RFI interference.
Before doing this, we figured we’d try again to enter learn mode using the programming tool.
This time it worked! We were able to establish communication between the TPMS sensors and the RCDLR.
Happy to say we are back to normal as all four tires now are showing PSI, as well as the DIC error messages disappearing.
Thanks to all who took the time to help me sort through this issue.
