Indicator glitch, rapid inside normal outside, bulbs ok but light on

[anton]

So my roomster 1.6 tdi  has developed an indicator glitch, its ok for maybe 2o mins sometimes then i get the bulb out light comes on followed by rapid flashing of the direction arrows,, when i pull over and inspect they are flashing normally, it will happen to both sides, sometimes both sides sometimes one. ignition off it will reset.

So i will continue to search on here  but any ideas ?

so far i have bought 4 new bulbs and 2 side  but only changed one due to the rain, i have checked fuse is tight, i have checked tightness of connections of what i think may be the modules, anything else ? if my basic stuff doesn't fix  (i will check for water in the side repeaters) it could it be the bcm?

[gumdrop]

Check the tension in the bulb contacts, sometimes these make poor contact.

[anton]

Yeah cheers,the first seemed ok drivers rear but I will double check the rest, 

[anton]

Well it's still an issue, I have changed the bulbs but still have the repeaters to do, checked module connections, fuse is tight and clean.

Anyway I have an hour's diagnostic booked in with a very well rated auto electrician later next week so I will try and update with hopefully a resolution, maybe help someone in the future.

 

[anton]

The auto electrician confirmed bcm and i  just missed out out that main dealer who clears  new old stock ,it was 50 quid

anyway booked it in at a vw specialist who made me wait 8 weeks then forgot to order the parts (Redruth)

in the end fixed myself for a couple of quid ,the abs light had joined in with the bulb out

lack of interest here but the search feature was useful as always

love the car now and shes averaging 54mpg  so i am ok with that, 

 

[Breezy_Pete]

On 06/10/2023 at 09:05, anton said:

 

in the end fixed myself for a couple of quid ,the abs light had joined in with the bulb out

 

 

 

 

What was it in the end please Anton?

I guess a couple of quid didn't buy a replacement BCM?

[anton]

well  i checked the bulbs a second time  and when i pulled the side repeater out (from the back, no way the lens would come off) it seemed very wet ,thought i had sussed it but again became very intermittent .

forward wind to now it will not happen for weeks then i will visit my folks in Yorkshire and that will set it off  but not every time i do this trip so i have learnt to live with it.

its weird when it happens ,rapid flash inside, normal out on the right same on the left but if left long enough will stop operating altogether on the left, reset ignition always works.

one thing that happened before it started doing it was a new windscreen, it seems dry  though

yeah so it does seem to be after long use ,i was even thinking of trying a pc cooling fan on the bcm as an experiment but as said it seems to improve month my month

come to think of it it was chucking it down when auto glass did the screen and didn't see a tent thingy