Isuzu MU-X Gearbox & Transmission Problems

What does the "check system" error code mean in the Isuzu M-UX?

Answered by CarsGuide 15 Sep 2020

Any time you have a fuse blowing consistently, you have an electrical problem. Either the circuit involved in lighting the indicator letters and shifting the vehicle into Park (modern transmissions use electronic actuators extensively) is shorting out or being overloaded, and that’s causing the fuse to blow as an alternative to the wiring melting and setting fire to something.

If it’s a new vehicle, though, it’s covered under the factory warranty, so a trip to the dealership should put it right at no cost to you. It could be a pinched wire, a poor earth, or a fault in the electronic control system. Either way, it’s Isuzu’s problem.

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Isuzu MU-X 2016: Problems after servicing

Answered by CarsGuide 14 Mar 2020

Any odd or new noises from an automatic transmission are, indeed, bad noises Gavin. Squealing or screeching from the gearbox can be caused by any number of things, but none of them are good and none of them are likely to go away on their own.

To be honest, I’ve heard of more problems with the Isuzu’s manual gearbox, with the fifth-gear synchro dragging and making a dry-bearing noise. The first thing I’d do is interrogate the car’s on-board computer to see if any fault codes show up and take it from there.

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Isuzu MUX LSU 4x4 2018: Does it need an extra a transmission oil cooler?

Answered by CarsGuide 12 Oct 2018

It’s good insurance, particularly if you are going to be towing, as you plan to do.

 

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Isuzu MU-X 2016: Transmission shudder and noise

Answered by CarsGuide 16 Dec 2016

It's not something that we have come across before, and it doesn't seem right, but it needs further investigation to find out if it is a normal function of the car or a fault. I suspect the latter, but couldn't say one way or the other without witnessing it do it. Take it up with your dealer again, and if he says it is normal with the MU-X ask him to demonstrate it on another car. If he can't reproduce it on another one press him and Isuzu to investigate why it's happening on your car. If he can show you that it does happen on others you have to believe that it is an in-built fault with the MU-X.

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