Automatic vehicle hold fault, parking brake fault -- possibly because of driving through puddle

[hydbob]

I just got those same two faults today after removing the original rear tire, replacing it with a spare, and driving down a steep incline. I then remembered that my spare was only at 20 psi, so I quickly went back home and pumped it up to 42 psi but the warnings persisted. I drove to my destination and back which was about 60km while those two faults kept cycling and beeping in the background.

I'm wondering if it has to do installing a spare without tpms and driving with the spare? I also happened to update to 2.0.61 while having the non-tpms spare on. I'm updating to 2.0.64 now; hoping that might resolve the two faults.

That shouldn't happen even without the tpms sensor. Perform a deep reset, overnight, and see if thr problem persists. Call CS if it does.

 

[Sula]

That shouldn't happen even without the tpms sensor. Perform a deep reset, overnight, and see if thr problem persists. Call CS if it does.

Contacted CS, will keep posted. Now back to stock rims but still 3 errors.

 

[Sula]

Swapped back to the original 21" wheel and all faults disappeared after driving for 4-5 block. So I guess the 20" spare tire was somehow causing the 3 faults.

 

[hydbob]

Swapped back to the original 21" wheel and all faults disappeared after driving for 4-5 block. So I guess the 20" spare tire was somehow causing the 3 faults.

Weird, but good to know!

 

[richiewho]

Thanks @Cosmo Cruz. I had to flatbed my Lucid to Costa Mesa last week. Service center representative said it will be there for about 2 weeks or so - not sure if they are overwhelmed with repairs. So far no feedback on diagnosis or possible root cause of the "Brake System Fault". Car has ~500 miles on it. I'm bummed :-(. If anyone else has encountered similar/identical faults and had it repaired, would appreciate your feedback on what the root-cause was and the fix.

Mine just did this morning. Was making a turn after dropping my daughter off at school and the brakes went out as I was rolling to a stop sign. I took some video and had to pull over since the break wouldn’t fully press down. Scary stuff for sure. I called the dealership and he walked me through a reset which temporarily fix the problem. However, I am driving it over there today for further diagnosis.

 

[mcr16]

Mine just did this morning. Was making a turn after dropping my daughter off at school and the brakes went out as I was rolling to a stop sign. I took some video and had to pull over since the break wouldn’t fully press down. Scary stuff for sure. I called the dealership and he walked me through a reset which temporarily fix the problem. However, I am driving it over there today for further diagnosis.

Hi, @richiewho. Thanks for sharing. I was going to drop you a DM, but it doesn't look as if the conversation feature is enabled for you yet. Perhaps one of the moderators (@hydbob, @Bobby?) can assist here.

 

[hydbob]

Hi, @richiewho. Thanks for sharing. I was going to drop you a DM, but it doesn't look as if the conversation feature is enabled for you yet. Perhaps one of the moderators (@hydbob, @Bobby?) can assist here.

done!

 

[mcr16]

done!

Thank you!

@richiewho I just sent you a DM.

 

[richiewho]

Hi there, they’ve had the car now for two days and I was told today that they are inspecting the body control unit. Hopefully I’ll know more tomorrow and share.

 

[lbckwciii]

My wife and I got the parking brake may not be engaged error on Saturday. We drove about 2.5 hours in heavy rain from Seattle to Vancouver WA, then parked on a slight incline. Came back to leave, found the error and were unable to move the car since one wheel at lease would not roll. Lucid Roadside Assistance towed the car back to the Seattle care center. They started looking at it today. Will keep this channel posted on our experience.

 

[tonybot]

My wife and I got the parking brake may not be engaged error on Saturday. We drove about 2.5 hours in heavy rain from Seattle to Vancouver WA, then parked on a slight incline. Came back to leave, found the error and were unable to move the car since one wheel at lease would not roll. Lucid Roadside Assistance towed the car back to the Seattle care center. They started looking at it today. Will keep this channel posted on our experience.

Sorry to hear that! Hope it gets figured out soon!