Sad to say my truck often sits for a week or more between drives. It’s definitely not every time, but there seems to be a correlation between how long it sits and an occasional delay getting reverse to produce torque. Fluid level is definitely correct, no other signs of transmission problems, hasn’t gotten worse in the 65k miles and 3+ years I’ve owned the vehicle. I’m not worried about it at all, and chalk it up to something within the transmission losing prime from sitting so long.
I recently did a full fluid exchange to make sure this fluid level and quality factor is ruled out. I have also reset the ECU shift mapping memory by removing the battery cables to see if it makes a different.
I haven't driven a lot to notice any change, will update in few days if the ecu memory reset made it any better.
I was reading that engagement delays happen due to couple of factors:
1. fluid level and degraded fluid quality. (I have eliminated this with full replacement)
2. Worn out solenoids in transmission valve body, so the solenoids are slow to respond due to aging. If they are super slow, they will throw a specific error whether its the fluid pressure solenoid or shift solenoid.
3. There are some bands within the transmission which wear over age and mileage which cause this.
I am also trying to baseline for land cruiser/lx , since these vehicles have too many moving parts (transmission, transfer case, front and rear differentials), may be its how the default response for the truck is that it take little extra time to make sure all of these components are lined up correctly before shifting?
I will try to test drive other lc/lx in the same year and lower miles to see if they are shifting any different.
(Based on the responses I saw so far, it may be the normal way the truck operates.)
Word of advice to all other, please drain refill your transmissions often (atleast every 60k miles if not for 40k miles). This will make your trunks run longer and repair free.
