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Towng bypass relay problem

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Hello all,

I have just purchase an 04 octavia tdi which has developed a problem in that when I indicate they flash about 5 times a second. Whilst the indicators are turned on the bypass relay in the boot makes a loud buzzing noise. At first I thought it may be my indicator relay, but the hazard lights work at the correct tempo. I suspect my bypas relay in the boot is broken, would it be easier to replace the relay or remove the towbar wireing as I have no use for it?

From 2012 to pass the MOT if a towbar is present then the wiring must be functional as it becomes a testable item next year. If you remove the wiring then remove the towbar as well. Are you sure the increased flash rate is not simply down to a failed bulb as this is the usual cause.

  • Author

Morning Mannyo, the first thing I did was check the bulbs, its the fact that the relay is making a really loud buzzing that makes me suspect it's broken. Of course I could be completely wrong!

Check the 13pin socket you might have some water/corrosion in it causing a short.

Pull the power supply from the bypass relay and see if that cures the problem, but as said above sounds like a short somewhere

  • Author

Thanks all problem solved, I disconnected the relay and additional wiring and all seems to be working fine. Fingers crossed!!

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