I just finished two days of driving school at Watkins s Glen, and it was amazing, but I have some warning lights on that don't go out...

First is TPMS, which came on during day one, and I'm guessing that one or more of the sensors failed due to heat. They are orange brand aftermarket sensors.

The VSC Off light is on Constantly. I never turned VSC off on the track. This came on during my second session of day two.

There is also a SLIP light that I've never seen before. It came in with the VSC light, or soon after.

There is also a red BRAKE light that came on a bit later. I checked the fluid level, and it is fine. I have not checked the pads, as it was too hot, and I didn't have a chance to take another look before sunset.

One of the other drivers at the track checked my car with his scan tool, and the car shows no codes. The check engine light is NOT on.

I also did the ECU reset procedure described in one of the other forums here. It took several tries to get the SES light to start blinking, but I eventually got it, and think I've done that reset correctly. It had not effect on the aforementioned lights.

I took a picture, but am posting from my phone and have no way to upload it at the moment.

What should I do next?

 

Check fluids, brake pads, tire pressure, tires, and finally speed sensors (consult II or III). If your running odd sets meaning lower profile in the front than the rear then your speed sensors will read differently, also if you apply the brakes you will notice the abs engage and pump the brakes. Get this fixed ASAP as you risk burning out the abs actuater($2000 part)

 

I did some checking this morning and the pads are definitley low, but nothing is critical. Fluid is fine as I mentioned earlier. I put Motul 660 in before taking it out on the track. I have same size wheels tires all around (245/40/19), so there's no front/rear size differential for the AWD system to compensate for.

I did some searching now that I have a slightly better internet connection, and found this thread: https://www.myg37.com/forums/g37-cou...-comes-on.html which indicates that it may just be that the pads are low. I am hoping that that's all it is. If that's the case, brand new Akebono premium pads (ACT888 and ACT905) can only handle 6-7 25 minute sessions at Watkins Glen.

I won't be able to change the pads until at least Monday night, but I won't be driving it again until then either.

 

Almost 3 hours on the track sounds like a reasonable lifespan....Would you post pix once you pull the pads?

Do you have any calipers to check wear?

 

Sorry for the delay in updating this post. I didn't have internet for a few days while travelling , and it's ben crazy at work.

The rear pads were in much worse shape than the fronts. The edges of all the pads look like they've broken off, and the cooling gaps in the pads have filled with brake dust in several places.

I was really surprised at how well the tires held up. They are Hankook Ventus V12s that already had about 4k miles on them including two autocrosses. They are down to 7mm in the front and 8 mm in the rear. I was expecting them to be in much worse shape, especially after how bad they looked after the first autocross.

After changing the rear pads for the half-worn ones I took off before going to the track, the red brake light would flicker off occasionally. I added some brake fluid, and all lights except TPMS went away.

I also had an appointment at the dealer to apply the latest transmission and engine TSBs. When doing that, they reset the TPMS and had to resync them, and they're all working. It looks like the heat may have caused the TPMS sensors to loose their sync with the car. They are Orange brand aftermarket sensors, but not the learning ones. The set of 4 sensors (new) cost $140 from eBay if I remember correctly.