My Mazda BT-50 went into limp mode after normal towing
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Asked by Lindsay
Hi, my Mazda BT-50 4x4 auto transmission went into limp mode after pulling up a range with a caravan on. It didn't work it hard; sat on 2700rpm, and it was comfortable at this. I got into the nearest town and checked that the transmission had only got to 106-degrees. Yet I had no gears. But when it cooled down, I had gears again. After having it towed home, I have been driving it around town no problem. Why did it go into limp mode?
Answered by CarsGuide
23 Sep 2024There are many reasons for a vehicle to enter limp-home mode. One of them, of course is transmission temperature, but there are lots of things being monitored, from the temperature of the engine oil, coolant temperature, oil level and even the operating temperature of the EGR valve (which is often water-cooled in vehicles like the Mazda).
The point being that even though the transmission entered limp-home mode, the actual problem may have been elsewhere, but the vehicle’s computer believed that shutting down much of the transmission’s functions would preserve and protect the rest of the driveline. Don’t forget, either, that there are many things – a failed solenoid, low fluid level, even a faulty wiring connection or earth – that can cause a transmission limp-home event beyond actual overheating.
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