Toyota Vanguard gearbox/transmission Problems

[Roland.O]

Symptoms
Whining noise
Transmission slipping
Delay to engage gears, delay in upshift and delay in downshift
Jerky shifts

Causes
Shift solenoid problems
Wrong ATF viscosity
Low ATF
Dirty ATF
Leaking ATF

Solution
Service gearbox
Replace faulty solenoids
Use correct viscosity ATF
Replace gearbox

Mitigation
Timely service and maintenance
Use correct ATF as per Owner’s manual