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Are you having problems with your 2006 Hyundai Sonata? Let our team of motoring experts keep you up to date with all of the latest 2006 Hyundai Sonata issues & faults. We have gathered all of the most frequently asked questions and problems relating to the 2006 Hyundai Sonata in one spot to help you decide if it's a smart buy.
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There have been issues with the door locks. I would take it to a dealer and have them check it for you, they can reprogram them if they find a problem.
Restarting the car has the effect of rebooting the computer, that's why the lights go out. You need to have it checked to find the cause; it's possibly a poor connection in the wiring loom, or perhaps a faulty wheel sensor.
The Sonata has a respectable maximum towing capacity of 1700 kg (braked), but only 750 kg without trailer brakes. On that basis you would need trailer brakes to tow your campervan, a good safety measure in any case.