Symptoms
A 'battery cooling fan maintenance' message, or a fan running louder than usual.
The fix, step by step
- Open the rear door and find the grille-like intakes low in the side trim on each side.
- Remove anything blocking them, such as bags, gear or dust, and keep cargo clear of them.
- If the warning keeps coming back on a low-mileage truck with clean vents, have the dealer scan it.
- One dealer cleared a reminder it believed had been set at 5,000 miles instead of 50,000 at the factory.
Tools & part numbers
- Vacuum
- trim tool if removing covers.
Where to buy the parts
Trim panel removal tool set (search)Summit Racing ↗
Hunting a used or discontinued part? Search eBay Motors for Toyota Land Cruiser 250 Series parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.