How Do You Check for Transmission Fluid Leaks in a Hilux?

Regular transmission fluid checks and leak inspections can help prevent major failures in the Hilux. Many owners follow a routine maintenance schedule to catch potential issues early.
Routine for Checking Transmission Fluid and Leaks:

Check Fluid Level & Condition:
Park on a level surface, run the engine, and shift through all gears before checking the dipstick.
Fluid should be red o r light brown dark, burnt-smelling, o r low fluid indicates a problem.

Inspect for Leaks:
Look under the vehicle for red o r brown fluid stains near the transmission pan, cooler lines, o r seals.
Common leak points: pan gasket, transmission seals, drain plug, and cooler connections.

Monitor Transmission Performance:
Slipping gears, delayed shifts, o r rough gear changes can signal low o r dirty fluid.
If the check engine o r transmission warning light appears, scan for fault codes.

Perform Preventive Maintenance:
Change ATF every 40,000–60,000 km or 20,000–30,000 km for harsh conditions.
Replace the pan gasket and filter if leaking o r clogged.
Use Toyota Genuine ATF WS o r a recommended alternative.

Tips for Hilux Owners:

Never overfill the transmission, as excess fluid can cause foaming and overheating.
If you suspect a leak, clean the underbody and check again after driving.
Address small leaks immediately before they lead to costly repairs.
If in doubt, get a professional inspection to prevent unexpected failures.

Following these steps ensures longer transmission life and smooth performance for your Hilux.