Hi all I'm having trouble with my   2012 Skoda Fabia 1.2 TDI greenline 5dr diesel estate. When i put my Near Side  indicator on none of the 3 lights work but offside works perfectly same with the hazards and alarm its just the N/S that's not working

 

i took it to my local garage and he said its the instrument cluster that's causing the problem it is temporarily fixed it could last a month or 2  it lasted a night t

 

Can an instrument cluster cause this problem are could it be something else

 

 

 

Edited 14 December, 20187 yr by popoff10

7 minutes ago, popoff10 said:

Can an instrument cluster cause this problem are could it be something else

 

The indicators aren't driven by the instrument cluster so it seems unlikely to be that, as far as I can imagine.

 

The module that drives them is known as the Onboard Supply Control Unit, and within that I believe all the indicators are driven by one (twin channel) integrated circuit on the circuit board.

The fact that they worked again after the visit to the garage suggests that this 'chip' isn't completely fried, and that maybe the fault is out in the body of the car.

Have a close look at each nearside housing that contains an indicator bulb, and around the wiring connectors for each, looking for signs of water having got in.

As Wino said, you will probably now, after it becomes faulty again, try to remove the front only then the rear only indicator bulb and check the response on hazards only, and take it from there if one of these easy to rear indictor bulbs removal now allows the hazards to function on all the remaining bulbs, if no good you will need to look at the side repeater bulb removal and repeat - before digging deeper as in the Onboard Supply Control Unit or its connectors.

15 hours ago, Wino said:

Thanks for your reply wish I found this site a few days ago before I bought a second-hand cluster for £80 can you tell me were the Onboard Supply Control Unit will be and is it easy accessable thanks

1

 

It's above the accelerator pedal, not sure if there's any trim you need to remove before you see it.

Just below the relay panel.

 

As I said, there may very well be an external cause for the indicator chip shutting down the nearside channel. Don't buy anything else 'til you've checked for water in any indicator housing or connection, and by disconnecting things one by one and seeing if the rest come back, as rum4mo suggests.

Edited 15 December, 20187 yr by Wino

well you were right about the cluster tried it and doesn't work put my old cluster back in and now the ABS, Traction Control, and tire light are on. Checked all wires and bulbs completely dry even tried to get a second hand  Onboard Control Unit (BCM) but no one has any  

 

just noticed something when the key is out off the ignition and i put the offside indicators on the offside head and rear lights come on same on the nearside is it suppose to do that 

Yes, that's normal. Parking illumination for when/if you have to park on unlit roads at night.

Just now, Wino said:

Yes, that's normal. Parking illumination for when/if you have to park on unlit roads at night.

thanks i thought it was another problem 

Swap the left indicator bulbs over to the right and vice-versa. If the problem remains the same, it won't be the bulbs but if it swaps sides too, it will. All three in one go.

Edited 22 December, 20187 yr by mrgf

3 hours ago, mrgf said:

Swap the left indicator bulbs over to the right and vice-versa. If the problem remains the same, it won't be the bulbs but if it swaps sides too, it will. All three in one go.

already tried that the bulbs work in the opposite side my local garage put it on a diagnosis machine and he said the relay has gone but i thought if i relay  goes it won't flash 

Sounds like the indicator stalk switch may be at fault.

5 minutes ago, xman said:

Sounds like the indicator stalk switch may be at fault.

iv tried that well iv listened for a contact noise and it flashes very fast so i think it ok unless there is any checks i can do  

Very fast flash is usually blown bulb. Is the dash bulb illuminating?

On 23/12/2018 at 21:10, mrgf said:

Very fast flash is usually blown bulb. Is the dash bulb illuminating?

I thought the car was givening me a early Xmas present it worked again for a few hours and then stopped again I got a quote from Skoda  if it is the  bcm it will cost just short of £1000 it's a bit to much for 3 flipping ligahts you can wire your home for less than that so it looks like a trip to the auto electrician next week 

Edited 30 December, 20187 yr by popoff10
Spelling errors

I had an indicator problem just before setting off on a 600 mile return trip this week and thought of you!

 

When reversing into my drive using the right indicator caused the left turn arrow on dashboard to light but not flash, trying the right indicator position again it was variously flashing the left but not right or nothing at all just the left turn arrow.

 

Guessing that it was the indicator switch giving a corrupted or unclear signal to the BCM I reverted to what I would have done with any previous simpler generation car, they would not have had all the histrionics but simply not flashed the right indicator. What I did was to forcefully, repeatedly and vigorously action the indicator switch through all its positions to hopefully shake out any dust and/or clean the contacts.

 

It worked well and touch wood there have been no repetitions.

 

These cars are far too complicated (and mine is soon 13 years old!) basic safety systems like lights and indicators now really on capricious PLC canbus controllers and the biggest fault in my mind is that none of the vehicle electronics will cope with the volt drop on starting the engine with anything but a new and healthy battery, I was involved with the electronic security systems and had some design experience, any 12v system that had an electronic controller operating a 12 volt load be it a gate operator, magnetic lock or whatever would use a 5 volt logic circuit so that it would always function even during a power cut, the load would fail before the control circuit started playing up.

 

I did come across some equipment that was badly designed, when the motor operated against an obstruction the control logic would lose all its programed settings and revert to the factory defaults, but that was a cheap badly designed piece of K-rap from a dodgy company with a bad reputation, here we are talking about a multi-marque German automotive group.

So iv just had it to the auto electrician it took him around 2 hours to sort the problem out the piece of wire was burnt out near the bcm cluster cost me £95 just hope it last longer then a few hours 

On 30/12/2018 at 09:39, popoff10 said:

I thought the car was givening me a early Xmas present it worked again for a few hours and then stopped again I got a quote from Skoda  if it is the  bcm it will cost just short of £1000 it's a bit to much for 3 flipping ligahts you can wire your home for less than that so it looks like a trip to the auto electrician next week 

...Although, just had my 2 bed ground floor flat re-wired... £3000!

Great that you got it sorted!