VXR8 Indicator Rapid Flash - wierd fault

[preciousmetal]

2007 VXR8 has indicator rapid flash fault. not sure its the usual fault as its only on LH side

have tried another working rear light - still faulty

replaced rear light module - still faulty

indicators flash 3 times normal speed on lane change okay

indicate left, flash normal 3 times (lane change) then rapid flash starts and continues

if you disconnect rear lamp, still does the same fault so not rear light (I think)

possible flasher relay or BCM ??

[preciousmetal]

Sorry for the old questions. As never actually seen it happen before. As that's what I thought - the light -

so even disconnecting rear light. Still does rapid flash ?

Also when rapid flashing happens does it always inducate okay for 3 flashes then goes rapid ?

Is this the normal fault regards rapid flashing fault

Thx

[preciousmetal]

ARAF said:

B7PSG said:

I beleive the fault is down to how much current (amps) is being drawn by the light unit James from what I've read..

Picadors did the patch leads.

Are the patch leads a mod to the existing loom / module ?

[preciousmetal]

ARAF said:

preciousmetal said:

ARAF said:

B7PSG said:

I beleive the fault is down to how much current (amps) is being drawn by the light unit James from what I've read..

Picadors did the patch leads.

Are the patch leads a mod to the existing loom / module ?

I don't have them, but I think they are. Basically, you unplug the unit from the loom, and the patch lead has male connector at one end, and female at the other. I'm sure someone that has one will confirm.

Thanks Ian

[preciousmetal]

ARAF said:

preciousmetal said:

ARAF said:

B7PSG said:

I beleive the fault is down to how much current (amps) is being drawn by the light unit James from what I've read..

Picadors did the patch leads.

Are the patch leads a mod to the existing loom / module ?

I don't have them, but I think they are. Basically, you unplug the unit from the loom, and the patch lead has male connector at one end, and female at the other. I'm sure someone that has one will confirm.

Thanks Ian

[preciousmetal]

donk r8 said:

I have a pair somewhere you can borrow to see if its that..............;)

Thanks for the kind offer Chris. Would appreciate this if possible. Trying to eliminate causes. Will also try another light aswelll

James

[preciousmetal]

MatrixXXx said:

the ECU measures the resistance of the light circuit if it goes out of tolerance it will rapidly flash the indicator as a warning to the driver .

in cold weather the resistance would drop and set off the warning, the patch leads put a resistor between the feed to the light and neg(earth) its from memory about 360ohms i posted the exact resistance some time ago.

if you try the other lamp assuming the connections are the same and it does the same thing then there must be a wiring fault, you need to measure the wire resistances to see if there is any difference.

the soldering on these LEDs is a know problem , it may be worth checking the soldering and redoing any suspect joints if you can use a soldering iron. could save yourself a few hundred pounds!!

it does it with or without rear light and module connected so not sure what that means ??

[preciousmetal]

MatrixXXx said:

preciousmetal said:

MatrixXXx said:

the ECU measures the resistance of the light circuit if it goes out of tolerance it will rapidly flash the indicator as a warning to the driver .

in cold weather the resistance would drop and set off the warning, the patch leads put a resistor between the feed to the light and neg(earth) its from memory about 360ohms i posted the exact resistance some time ago.

if you try the other lamp assuming the connections are the same and it does the same thing then there must be a wiring fault, you need to measure the wire resistances to see if there is any difference.

the soldering on these LEDs is a know problem , it may be worth checking the soldering and redoing any suspect joints if you can use a soldering iron. could save yourself a few hundred pounds!!

it does it with or without rear light and module connected so not sure what that means ??

the issue is because they changed from normal filament lamps to the led variety and the different characteristics cause the problem

swaping the light would prove if it is the light, if it works with another light(led cluster), id then check the resistance with the light connected and with it disconnected to see if the loom has gone to earth, assuming the front indicators are working.

without the light connected it will fault as it will be open circuit, it is looking for a specific resistance window,

Thanks all, swopped lamps and fault swopped sides so its the rear lamp ? i was confused that fault was still present when lamp disconnected, the fact that HSV swopped normal lamps for leds, the faults sort of make sense now

will the picador "fix" it or is worth taking the light apart and get electrician to sort poor soldering ?? how many have taken the lights apart

eek..... not quite sure what to do

[preciousmetal]

I bet it isn't easy to get the lights apart, assume patience and a sharp knife to seperate the bonding ??? too much for me

[preciousmetal]

Chris, might be the best bet first, thanks for the offer, please let me know when you are about as I am about tomorrow 9-3 at kingsley

[preciousmetal]

Thanks for all your help and especially to Chris (Donk r8) who popped over on Saturday. now resolved with 2 new mod. resistor Looms all working fine. now I understand more why they go wrong having looked at the wiring and set up

regards JB

[preciousmetal]

leigh1050 said:

preciousmetal said:

Thanks for all your help and especially to Chris (Donk r8) who popped over on Saturday. now resolved with 2 new mod. resistor Looms all working fine. now I understand more why they go wrong having looked at the wiring and set up

regards JB

Is there a way to cure this with a bit of work on the wiring?
I've got the yellow dot module but it didn't fix the fast flashing.

not sure what you mean about yellow dot module. I fitted a replacement flasher module and that didn't make any difference but the modified loom resistor fixed it

[preciousmetal]

One loom each side for each light, so one piar of looms does one pair of rear lights. the looms are not sides, the fit between main loom and rear module

[preciousmetal]

FoxdieUK said:

Glad to hear Picador are still sending out looms, legends

FYI from now cars need to be checked by Picador for confirming fault on Tech2 before VX will release looms to dealer

[preciousmetal]

magicgreg said:

preciousmetal said:

One loom each side for each light, so one piar of looms does one pair of rear lights. the looms are not sides, the fit between main loom and rear module

If the fast flash only occurs on say the drivers side, ie both front and rear indicators, then I presume that the patch leads need to be installed on both the front and rear drivers side? Not just fitted to both rear lights, if the issue is only down the driver's side?

whatever side it is, fast flash will be on all 3 indicators per side ie front + rear lamps and side repeater. but the fault is only caused by rear lamp unit (LED) and that's the one that needs the loom

[preciousmetal]

magicgreg said:

Placed a patch lead on each rear light and no change still, the fast flash on the offside persists. Unless the patch leads that I have aren't up to scratch...

have you fitted them between the main wiring harness and the rear light module ie before the rear light unit

ie on the NS its approx above the battery