2020 Supra TCM

[mk5nate]

Does anyone know if there are updates currently for the tcm on 2020? I’m having this issue where sometimes 5th gear to 6th it’ll shift but indicator still shows 5th gear and won’t update and sync until I apply more throttle and goes into 7th gear happens occasionally car doesn’t feel weird just the display. Actually one time had a rare glitch I wanna say where the car was shifting but the rpm’s kept climbing steady almost to redline but I was actually around 2k rpm. I heard it’s normal for things like this to happen system can glitch a lot of the times. Would love some feedback.

Sponsored

 

[nanaisu]

I'm sure there's an update that you can perform with an istep update, though that might be a costly process if you go through the dealer.

General question, have you tried xHP first? It reflashes the TCU and might be a quicker/less expensive than doing a full istep update.

 

[itzTang]

trans leaving the building

 

[razorlab]

Does anyone know if there are updates currently for the tcm on 2020? I’m having this issue where sometimes 5th gear to 6th it’ll shift but indicator still shows 5th gear and won’t update and sync until I apply more throttle and goes into 7th gear happens occasionally car doesn’t feel weird just the display. Actually one time had a rare glitch I wanna say where the car was shifting but the rpm’s kept climbing steady almost to redline but I was actually around 2k rpm. I heard it’s normal for things like this to happen system can glitch a lot of the times. Would love some feedback.

Are you tuned?

 

[mk5nate]

trans leaving the building

No it’s not lol I’m saying the digital cluster car drives fine mate if trans was going out I would say oh feel like trans giving out

 

[mk5nate]

Are you tuned?

Yea

 

[razorlab]

Yea

Could be the reason. What you are describing is inline with torque mismatches. OTS tune or custom?

 

[mk5nate]

Could be the reason. What you are describing is inline with torque mismatches. OTS tune or custom?

OTS MHD stage 2 e40
Yeah it’s rare when that happened but occasionally light throttle seems like ECU isn’t confirming shift indicator to update number gear even tho it shifts and will sync up next gear doesn’t happen all the time how can I fix that?

 

[mk5nate]

Could be the reason. What you are describing is inline with torque mismatches. OTS tune or custom?

Again car shifts and drives fine it’s just the guage indicator

 

[dustwhyn]

Again car shifts and drives fine it’s just the guage indicator

He’s explaining WHY you’re having the issue.

 

[razorlab]

He’s explaining WHY you’re having the issue.

Sponsored