2006 Toyota Harrier Suspect Gear Box issue. Need advice!

Ken, may not be the gearbox, it could be the position sensor being out of adjustment or a shift solenoid needing to be replaced....

Thanks Joemom, position sensor out of adjust. Does this part need to uninstall the whole gear box only able to check? So I just need to tell the mechanic to check on it? Ken

No the gearbox does not need to be removed both parts are inside the gearbox...

Okay. Thanks joemom! I will go ask mechanic and check it out. :)

You're welcome

Hi Ken, I'm having same gear transmission problem on my 2002 Alphard 3.0 V6. Can you please let me know how you solve the problem? nschems@gmail.com (email)

I am facing a same issue here, shift to D not moving, I need to press the gas slightly to like 3000rpm then c feel the attachment of gear. Still looking for solution. Malaysia here.

did u fixed the problem?

Kinda like fixed, its a temporary fix. Using KW Trans-X transmission additive, the technician said can stand up to 20k km, still trying. You can try Lubegard Transmission additive, thats what I gonna try the next oil change. Long term fix is change the gearbox, but I don't wanna go that path, so just use transmission additive is fine...as long as it work.

The problem with my gearbox is "Pressure Leaking", been told by technicians, as the parts ageing, the rubber seal inside the transmission get dull and hard, not flexible as it used to. So Every morning I need to pull to D, and rev it with handbrake on to 2000rpm, after around 10sec or 20sec the gearbox got heat up, then the shifting back to normal.

The purpose of transmission additive is to soften or swelling up the rubber inside the transmission, to keep the pressure stable inside the transmission. You can go youtube or google Lubegard or KW Trans-x, lot of 30 years car using... Hope this help :)

yeah, i have the same problem on my harrier 2005. every morning or during cold condition engine, after start up, i need wait around 5 to 10 sec and rev it to 3K RPM.. then it only work.

I have a problem with my harrier car, it displays check engine light but only in the after noon but in the morning does not. Any clue on the reason for this please.

Kapinga, check see whether your radiator reservoir tank cap is not tightly closed. Or radiator cap is not closed properly. I have this issue before and check engine light come on sometimes. Hope this help

well for future reference, since tgis is an old thread; my 3.0 liter Alphard gearbox were having issues warming up in the mornings. it went from seconds in the beginning to about 5 minutes over the span of 3 months. considered overhauling the box as the mileage is high but..... I fixed a radiator water leak last week, and after that, the gearbox is work fine. I guess it was either a partial blocked gear oil pipe connected to the radiator that somehow cleared. I'm frankly at a loss. hope it helps

Kapinga, there are 5 common causes of Check Engine light show. 1. Replace Oxygen Sensor 2. Loose or Faulty Gas Cap 3. Catalytic converter 4.Mass Airflow sensor 5. Spark Plugs and wires. if able to check on these then you will have resolved the issue. Ben Uganda

How many gear box sensor in harrier?

I have a problem with a Toyota harrier 1998 model. It has an automatic and manual gearbox. If I put to munual the icon for manual start to flick and it does not change gears up or down and now when in auto mode it does not go beyond 3. What could be the problem and how van it be fixed

Hello, I have a problem with the harrier year 1999 When starts to move forward it gives a fun sound then it stops whilst in D. Tries to put in R still does not move Am told everything is ok..... Like the oil, but I don't know what's happen please help. Maluba.

toyota harrier mcu31 cannot enter reverse gear when engine is hot

Am also a gearbox mechanic WhatsApp me on 0758629952