Zeus Zuco: Recently my toyota RAV 4 J started having gear selection issues I.e it takes time to select automatically from gear 3 to 4 and 5. My mechanic said its the brain box, can the brain box really cause this problem. Thanks

ZeusZuco:
Recently my toyota RAV 4 J started having gear selection issues I.e it takes time to select automatically from gear 3 to 4 and 5. My mechanic said its the brain box, can the brain box really cause this problem. Thanks

Henray001:
NAIRAlanders recently bought a 2003 Camry V6 , sometimes it accelerates well but doesn’t have that power you expect from a 6 Plug Car and after few minutes it slows back down . Took it to a rewire and he said it’s the brainbox . I’ve serviced the gear, engine and cleaned the injector , changed air filter, plugs, nozzles serviced, changed plug coils , cleaned fuel filter and 02 sensor but the problem is still there .
I need help Gurus

Henray001:
NAIRAlanders recently bought a 2003 Camry V6 , sometimes it accelerates well but doesn’t have that power you expect from a 6 Plug Car and after few minutes it slows back down . Took it to a rewire and he said it’s the brainbox . I’ve serviced the gear, engine and cleaned the injector , changed air filter, plugs, nozzles serviced, changed plug coils , cleaned fuel filter and 02 sensor but the problem is still there .
I need help Gurus

chadrain:


It is the ECU.

Kashif:


Yes, TCM (brain box) can cause problems for transmission, but you need to be sure it is the culprit before replacement. In your case, the possibility is remote. Scan vehicle. Check MAF, TPS, VSS, etc. Might even be low atf or plugged filter.

Because some RAV4s have TCM issues does not mean all their transmission issues. That notorious wahala is in the 1 and 2 bind, which toasts the direct clutch.

Kashif:


Yes, TCM (brain box) can cause problems for transmission, but you need to be sure it is the culprit before replacement. In your case, the possibility is remote. Scan vehicle. Check MAF, TPS, VSS, etc. Might even be low atf or plugged filter.

Because some RAV4s have TCM issues does not mean all their transmission issues. That notorious wahala is in the 1 and 2 bind, which toasts the direct clutch.

Gracepikin33333:
I greet you cheif
Please help, my toyota corolla 2010 automatic transmission won't engage in drive until after 15 minutes in the morning if I start the car but if I put it in reverse and other gear, it would select. Also it does delay before switching to another gear when on motion, what could be the cause? I did scan today so it says the brain box is where the error is and not from the gear box, how true is this? Error codes was cleared, we tested and viola, the transmission ran well when we tested it on express but when I was driving in town, I still experience same issue, what can I do?

Gracepikin33333:
Here are the codes boss @Kashif

Without you giving more details, such as model year AND engine size, I can't answer your question. Without the model year, I don't even know if your transmission has a separate TCU that can ve scanned via the OBD port.

Dozieson:


You are not supposed to do all these without scanning your car.

Please scan and the result will point to the direction of fault

Again, which oil did you use in servicing the gear?

nairamaniac:


Sorry, IV come to realise that scanning doesn't show all faults.

Except maybe it should depend on the grade of the scanner.


Maybe some scanners are higher than others

Kashif:


You need to fix all these issues first. If you can reach your transmission harness, disconnect and see if you have any movement when cold. This should put your car in limp mode and default to the 3rd gear.

The 15minute delay is still a puzzle