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Toyota HiLux 2009: Overheating when beach driving

Like Peter Shanahan has reported with his Toyota HiLux the automatic transmission warning light on my 2009 SR5 also comes on when I drive on the beach. When it does I stop the engine and give it 30 min to cool down and then all is good. I mentioned this to the service centre and they said that there was no info regarding a problem with the on board computer. I find it hard to believe that a warning light could come on and not be recorded in the car's computer, as they said that is what happens.

We received the following feedback from Toyota telling us that a Technical Field Manager inspected Peter Shanahan's HiLux and the issue was discussed with the owner. The Manager's findings were that "the vehicle was fitted with a bull bar, driving lights, canopy, and roof racks, all of which add additional weight and can restrict the cooling dependent on driving conditions, terrain, speed, ambient temperature, wind, caravan type etc. The ATM temperature light illumination as per the owner's manual recommends to slow down/pull over to allow the transmission to cool. This is considered within design intent."

Toyota's conclusion was that the vehicle was operating normally, which should be a warning to other HiLux owners that they should be aware of the possible effect accessories could have on the performance and cooling of their cars, particularly when under the additional load of towing. As for yours, I could imagine the auto would be under a heavy load when ploughing through sand and could well need a breather. It's probably worth fitting a transmission oil cooler.

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