This is good to hear. My only question is if you drove an hour out and an hour back, how does that equal four hours of driving?

 

Combined with his 2 hours of driving a couple days ago with the radio fuse pulled.

 

This got me thinking. It’s been awhile since I’ve had the console off & the head unit out, but I think I stuffed most of the wiring & the pac harness toward the passenger side because there was more room.

 

Yeah, I was including the 2 hours with the fuse out.

There is definitely more room towards the passenger side and I had to work to get everything packed tightly to get the head unit to fit with everything behind it.

 

Did you take any pics of your work and if so, are you going to post them? It would be helpful.

 

I only took a couple and the first is blurry
Upper is the shield for the GPS antenna. Nothing too technical, basically wrapped all the antenna connections, camera connections, and anything else hanging off the PAC harness that was unterminated.

 

Incredible info in this thread. Not what I wanted to read, but should be helpful. I noticed my TPMS system acting up after installed a Kenwood receiver this weekend. I am able to use a TPMS tool to to relearn all the sensors and it's good for a while, but then they act up again. Sometimes it's the left front, sometimes the left rear, sometimes right rear. I thought the tire shop had installed them wrong but the more I got to reading, the more it clicked for me that this could be related to the Kenwood install. The timing is too much of a coincidence to ignore.

I'm going to take the dash apart again and move my wiring to the left side and wrap it in tin-foil. Annoying to say the least, but hopefully solves the issue. I was hauling-**** coming around an off-ramp with the TPMS light on and the car's active handling tried to slow me down and straighten me out, which was unsettling to say the least.

 

I thought my TPMS issues were gone, but after about an hour into a spirited cruise with my son the active handling kicked in taking a sweeping curve at about 60 mph and jammed on the front passenger brake. After the active handling warning then the TPMS light kicked on .

I turned around and headed home, and even going relatively slow around the curves the active handling would kick in and apply the brakes. Very aggravating.

 

Sorry to hear that JABCAT. I haven’t had any issues since I wrapped everything in foil. I’ve put several thousand miles since my last post. Crossing my fingers it stays good.

 

I continue to have issues with my sensors. In my case sensors won’t relearn no matter what I try.
67miata (and I realize there have been posts on this) exactly what did you wrap in foil?

 

javaman - I removed the Sirius module since I had been using the iPhone app for Sirius. I then wrapped every connector in foil. I also made a cup (open on the top for the GPS antenna). Once that was done I tried to get as much of the PAC harness and head unit wiring toward the drivers side (and away from the RCDLR) as possible.

Hope this helps.

 

Thanks - will give it a try!

 

Javaman, do you have a custom tune? There's a post somewhere on the forum by @Dano523 stating that if the tune is locked, it would prevent programming the TPMS sensors.
Also, according to the shop manual, the car must be in ACCY mode, not RUN mode, to get into programming mode.

 

No, if tune is locked, it will prevent a Tech II from working with the car since it can not seciruty lock, but since you use the Key fob to put the car into TPMS relearn mode itself, locked tune should not stop the RCDLR from learning the new fobs.


As for reading through the post once again, remember that you have the RCDLR antenna at the glove box slot, one on each side of the B pillars about the gas cap location of the car, as well as the one in the rear of the car. So if your having problems with a specific TPMS location(s), then its RF noise at the nearest location of the antenna for those TPMS's, or just enough RF noise at one of the locations (glove box slot area), that is drowning the entire system with enough input to cause pick up problems in the other antenna locations.

For the most part, the head unit itself should not be the problem, but could be a RF problem on of the after market added in antenna's. Most of the time the GPS antenna above the radio to the left in the factory'ish location is not a problem, but could be either XM module antenna if its mounted in the same area as well. Hence best to mount the after market XM antenna back in the rear fender void area to try to get distance from it and the rest of gear in the front of the car.

Or, could be that the TPMS's in the car do not have a strong enough signal to get through the added RF producing items isntead (getting drowned out). God knows I have seen enough cars that just dash replacement LED builds have cause problems with the RCDLR not being able to see the fobs, much less the TPMS that are being transmitted every so often to up date the system to the same RCDLR antenna's.

 

I have the Pioneer AVIC 8200 NEX in mine using the PAC GM1A-RST interface, also with the XM tuner which I have mounted on the right side, underneath the HVAC controller, and through the use of adapters I'm also using the stock XM and Nav antennas, I'm also running a Kicker Amp installed underneath the water fall where the stock XM tuner was originally located to power a dual Kicker 8" Solobarics in a Subwoofer box I designed and built. I'm also using the iPhone 11. I have the Morimoto LED head and fog lights as well as the LED side marker lights that are sold by Vette Lights as well as LED taillights and interior lights. The only issue I've ever had is the "fob not detected" warning and it's always caused by my phone being right next to my fob, if I move the phone slightly it goes away, other than that I've never had any issues with the TPMS's like you guys.

 

I had no issues with my ‘12 GS that had the exact same aftermarket audio set up, same Morimoto head lights & tail lights, Oracle side markers, etc. I transferred all that from the GS to the Z. The only difference is the brand new TPMS I purchased when I purchased new tires.

I installed new tires & TPMS immediately after purchasing the vehicle because it was on original 10 year old tires. I purchased OEM TPMS with a manufacture date of 6/19 (purchased 3/20) so only 9 months old. From the get go they’ve been giving me issues.

 

If you think about it, that's probably not the only difference. You're assuming that the RCDLR and antennas are the same between the '11 and '12 MYs, but for one thing, both 'green' and 'black' sensors work in the '11, but AFAIK, the 12's and 13's only take the black sensors. So, right away there's some kind of difference. Also, it's not unusual for there to be component changes in the circuit boards, and even re-routing and addition of traces in board revisions to resolve problems from one production run to the next. So maybe the version of the RCDLR and its compnents that shipped with the 11s is more sensitive to RFI. Maybe the antennas are different, or aligned differently. Maybe there's extra shielding in the 12s. Your Z also has an aluminum frame. The 12 was steel, so maybe there's some influence there to RFI getting between the sensors and RCDLR. Pretty tough problem to solve given the number of variables.

 

^ Interesting details to add. My GS is also an '11. I drove about 25 minutes last night to Home Depot and the TPMS light came on for the front right just as I was pulling in. I did the relearn procedure for all 4 sensors when I parked and was back to "normal".

Before I drove home, I turned the stereo receiver off and the TPMS lights never came on. I drove around a bit longer and the TPMS still never came on, so it seems related to the stereo being on. The only new electronics I installed this past weekend were external front/rear cameras, the receiver, and the sub. I highly doubt the cameras or the sub are related to this, but maybe the power draw from the sub is affecting the TPMS?

My next experiment will be unplugging the sub while leaving the receiver on to see if the TPMS light comes on. If so, I've ruled out the sub. I'm trying as many combinations as possible before taking the dash apart again. Fairly certain it's the new receiver. I'm just going to wrap every single wire/loom in aluminum foil. It doesn't have GPS so that module couldn't be affecting my TMPS.

 

Bumping this thread because it's one of two that has all this great info about Kenwood receivers causing RF interference with the TPMS sensors.

I took apart the console tonight and wrapped all the wires with foil. The remote sub wire and RCA cables go through the center and I now have all the headunit wiring tucked to the left instead of the right. I'm having 4 new TPMS sensors installed on Thursday so my fingers are crossed that this fixed it. I will update this thread later in the week.

 

Success! Once again Dano (and the forum in general) has come in clutch with great information.

I just did my first hour-long drive and the issue appears to be gone. Before wrapping the wiring, the sensors would stop reading after 30-40 minutes every time.