Issues with an Isuzu D-Max's SVS dash light
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Asked by Glenn
My Isuzu D-Max’s SVS dash light illuminates about 15 minutes into towing a 2.5-tonne caravan. The light remains illuminated while the engine is hot or still warm. When it’s started again after some downtime, the light remains off until I tow again. The light does not illuminate at any other time, even when the vehicle is hot. The vehicle was recently serviced, but the fault could not be replicated then, as the van was not attached. The vehicle has done 335,000-plus kilometres.
Answered by CarsGuide
15 Aug 2024This is a tricky one because the D-Max’s SVS warning light seems to be a bit of an all-rounder. That is, it indicates a fault, but a non-specific one. Certainly not one that can be read by the majority of aftermarket scanning tools. Logic suggests there’s something within the driveline that is getting too hot for the computer’s liking, a theory backed up by the fact that it only triggers when you’re towing a big load and the car is working its hardest.
The solution seems to be to present the car at an Isuzu dealership as this may be the only workshop that will have the D-Max-specific scanning gear to determine the cause or even narrow it down.
For the record, the SVS stands for Service Vehicle Soon, but I’m afraid even that’s a fairly generic recommendation and doesn’t get you any closer to the cause. That said, when engine oil or transmission fluid gets beyond a certain temperature, the computer will often detect this and call for a change of fluids as a means of driveline protection. This could be what’s happening every time you tow.
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