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Matt
Matt, Mechanical Engineer
Category: Jaguar
Satisfied Customers: 21631
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Gearbox fault light coming on v8 4.0 sovereign 97

Customer Question

gearbox fault light coming on v8 4.0 sovereign 97 reg
Submitted: 1 year ago.
Category: Jaguar
Expert:  Shantal-Mod replied 1 year ago.
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Expert:  Matt replied 1 year ago.
Hello as you have a fault light on then by far the best method to repair is to get the car plugged into a diagnostic machine which will read off the fault code stored in the ECU (providing the light is still on at this point) and indicate which sensor has failed or whether the fault is more serious. it woudl also be worth checking all the electrical connections of the gearbox, remove each connector in turn and spray with contact cleaner. Check that the wiring to the gearbox is in good condition with no chafing or frayed wireI'd also take a look at the colour of the transmission oil it should be a dark red colour if its black then its needs changing together with its oil filter. Also check its level with the gearbox warm and just after you've moved the selector through all the positions leaving it for a few seconds in each one and then back to park. You can top up the box through the side fill plug if required and make sure you use the correct oil for your car as the fluids are not all the same. Some manufacturers recommended a change of the type of fluid - Speak to the local dealer and parts dept - they will advise you on the updated fluid to use..

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