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New TPMS causing system faults?

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Lets start with Sept2020 build model3. i have some parts from the '21 but not all of them. its a weird hodge-podge parts bin of this and that. I recently got a set of Summer wheels and I'm retiring my Aeros to winter wheels. Got everything for the new setup at Tire Rack/Discounters including 'compatible' TPMS , more on this. My build allegedly uses the old radio freq not BT after training the sensors we got that all working.

Picked up new wheels 8/30, put on car 9/1, got a warning 9/2 on my morning commute. i did multiple tpms relearns, resets, hard reboots, and switched tires on the UI to 19" no avail.

9/3 i went back to tire shop they adjusted tire pressure and relearned ALL the sensors and everything worked PERRFECT!

9/4 i went on a small in- state road trip covered a few hundred miles and no issues what so ever. supercharged and came home.

9/5 i woke up and drove to do errands and crossing a railroad track my dash lit up like Christmas.

All these errors came up at the exact same time

DI_a245 Vehicle Hold Feature Unavailable

DI_a222 Stability control disabled

UI_a020 Steering assist reduced

DI_a223 Traction Control disabled

APP-w009 Automatic Emergency Braking is disabled

ESP_a039 ABS disabled

In addition to the above parking sensors are screaming at me, I have no cruise, I have no regen, throttle response is retarded, and I'm not sure if brake booster is acting up OR if I'm

I'm basically driving a car from the 1980s, driving ICE cars now kinda scares me but this is straight up TERRIFYING.

I have a service appointment for next Tuesday 9/13 but i really wanna find a solution here prior to this.

I have a couple ideas of paths forward but id appreciate the communities input here.

PLAN A: It looks like people having similar issues have linked it to the Wheel Speed Sensors, WSS, going out. Pulling Aftermarket wheels, checking wheel sensors on 4 Corners making sure there's nothing out of the ordinary. I see this going one of two ways:

- It either checks out fine > Go to PLAN B

- Sensors/Wires/etc. show signs of wear and something has happened replace WSS. and other? I am 7mm closer to front suspension (+7mm back spacing) and 11mm further in back (+7mm backspacing -18mm spacers). This could be a concern but nothing is touching.

PLAN B: Put Winter set up on car drive 30 miles. see if everything clears up. I see this with in conjunction with PLANA will tell me the following:

- New wheels have damaged wiring and need to looking into rerouting or maybe 5mm spacers for front wheels

- Aftermarket TPMS is causing radio interference scrambling the WSS system and throwing faulty codes. need to get Tesla ones

I guess my question here is checking my methodology AND/OR if there's anything obvious I'm missing. Id like to have a quick fix and ideally not go to the SC.

Attached are pictures of new TPMS, Tire measurements winter v summer

Honorable mention should I decrease tire pressure on these bigger (taller and wider wheels) or no?

**Crossposted on Reddit hoping to reach a bigger knowledge pool here.
 

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Lets start with Sept2020 build model3. i have some parts from the '21 but not all of them. its a weird hodge-podge parts bin of this and that. I recently got a set of Summer wheels and I'm retiring my Aeros to winter wheels. Got everything for the new setup at Tire Rack/Discounters including 'compatible' TPMS , more on this. My build allegedly uses the old radio freq not BT after training the sensors we got that all working.

Picked up new wheels 8/30, put on car 9/1, got a warning 9/2 on my morning commute. i did multiple tpms relearns, resets, hard reboots, and switched tires on the UI to 19" no avail.

9/3 i went back to tire shop they adjusted tire pressure and relearned ALL the sensors and everything worked PERRFECT!

9/4 i went on a small in- state road trip covered a few hundred miles and no issues what so ever. supercharged and came home.

9/5 i woke up and drove to do errands and crossing a railroad track my dash lit up like Christmas.

All these errors came up at the exact same time

DI_a245 Vehicle Hold Feature Unavailable

DI_a222 Stability control disabled

UI_a020 Steering assist reduced

DI_a223 Traction Control disabled

APP-w009 Automatic Emergency Braking is disabled

ESP_a039 ABS disabled

In addition to the above parking sensors are screaming at me, I have no cruise, I have no regen, throttle response is retarded, and I'm not sure if brake booster is acting up OR if I'm

I'm basically driving a car from the 1980s, driving ICE cars now kinda scares me but this is straight up TERRIFYING.

I have a service appointment for next Tuesday 9/13 but i really wanna find a solution here prior to this.

I have a couple ideas of paths forward but id appreciate the communities input here.

PLAN A: It looks like people having similar issues have linked it to the Wheel Speed Sensors, WSS, going out. Pulling Aftermarket wheels, checking wheel sensors on 4 Corners making sure there's nothing out of the ordinary. I see this going one of two ways:

- It either checks out fine > Go to PLAN B

- Sensors/Wires/etc. show signs of wear and something has happened replace WSS. and other? I am 7mm closer to front suspension (+7mm back spacing) and 11mm further in back (+7mm backspacing -18mm spacers). This could be a concern but nothing is touching.

PLAN B: Put Winter set up on car drive 30 miles. see if everything clears up. I see this with in conjunction with PLANA will tell me the following:

- New wheels have damaged wiring and need to looking into rerouting or maybe 5mm spacers for front wheels

- Aftermarket TPMS is causing radio interference scrambling the WSS system and throwing faulty codes. need to get Tesla ones

I guess my question here is checking my methodology AND/OR if there's anything obvious I'm missing. Id like to have a quick fix and ideally not go to the SC.

Attached are pictures of new TPMS, Tire measurements winter v summer

Honorable mention should I decrease tire pressure on these bigger (taller and wider wheels) or no?

**Crossposted on Reddit hoping to reach a bigger knowledge pool here.
Hi did you ever solve the problem? Would be interesting to know…. I have a similar problem… my steering has gone Heavy, no cruise control and my autopilot not working either turn a left or right my steering won’t go back to the Center I don’t know what is happening
 
Hi did you ever solve the problem? Would be interesting to know…. I have a similar problem… my steering has gone Heavy, no cruise control and my autopilot not working either turn a left or right my steering won’t go back to the Center I don’t know what is happening
That sounds specifically like a power steering rack issue. Any noise involved? If not, could be a ground stud issue. Any errors/ warnings?
 
Looks like two different issues, EPAS is the power steering. If they appeared at the same time, it might be a ground issue.
What specific model and year?
Thanks for reaching out to me really appreciate There is no noise coming from anywhere…. yes both problems came same time I have a Model 3 2021… how do I check all the grounds? Where are they located are there any underneath ?
 
I don't think the battery would be the root of these two issues. The wheel speed signal goes to a module in the same left front area as the steering ground junction. Could be unrelated causes though.
you was right! The battery was not causing these problems I found a bad earth and now the auxiliary battery is showing full capacity… still I have the same issues with heavy steering, I do have traction control fault and Abs fault come up on the screen could it be a abs sensor causing this problem? I hope I do not need to replace the steering rack but thinking what I could try before that?