Every bulb works but!

sherodub · 16th May 2012, 13:35

I have the bulb warning light on. EVERY bulb on the car lights, if I had a bad contact would I get bulb warning even thought he relevant bulb was lit?

I have NCT (MOT) next week and even though no bulbs out, bulb warning light would be a problem over here (Ireland).

Any ideas?

I have double checked and everything works, high beam, low beam, parking lights, front fogs, rear fogs, high mounted brake light, number plate lights (both), brake lights all six indicators, reversing lights, everything lights.

FLYER · 16th May 2012, 13:41

Have you recently changed a bulb ????

Have you considered the corroded plate lights scenario. ?????

sherodub · 16th May 2012, 13:49

No, no bulb changes. Might try the corroded contacts issue on the festoon bulbs on the number plate lights, I CAN see some misting/tiny water droplets in them even though both plate lights are lit.

Cheers Flyer (Hail Hail ...cough)

pab · 16th May 2012, 14:08

Remember if you have a brake light out the system compensates and will light the fog etc. Carefully check each bulb in the rear cluster.The side repeaters and reversing lights are not on the bulb failure circuit.

Thread moved to the Technical Help forum,redirect left in the old location.

sherodub · 16th May 2012, 15:00

Cherers PAB, good to know re the side indicators and reverse lights, as my reverse lights are LED but have been working for a year or so with no probs so its not a canbus issue.

With tool box sitting on the brake pedal, car in reverse gear with handbrake on, every light in the back of the car is lit, so no subsituting going on.

Greeners · 16th May 2012, 15:18

My money will be on the number plate lamps......check the contacts and pop a new pair in.

StevenWilliams · 16th May 2012, 20:00

I had LED lights that were fine for years but then I started to get flashing xenons..

it turned out to be my canbus friendly LED number plate lights were playing havoc with the canbus system.

replaced them and my problems went away so I'd defo swap them out as part of a test.

ROVERX501 · 16th May 2012, 23:55

Hi,
I have the light on the dash illuminates every so often, if I use the passenger side indicator the indicator flashes very quickly, and the driver side flashes as normal, then all of a sudden the rapid flashing returns to normal, and the warning light goes out as well, so this maybe coincidence but I wriggled a black wire coming from the driver side rear cluster and the rapid flashing from the passenger side returned to normal, so I personally seem to have a bad earth somewhere on one of the light clusters at the rear.
This maybe what you have, as it looks as though a bad earth will illuminate the warning light on the dash.

sherodub · 21st May 2012, 14:21

Thanks for all the suggestions.

Solved it the old fashioned way. I took out every bulb and re-fit them to no avail. Then out of pure frustration I performed a 'percussion adjustment' on the rear left light cluster and the ****** fault light went out!!!!

Typical.

FLYER · 21st May 2012, 14:24

Good old Irish brute force .

16th May 2012, 13:35	#1
sherodub Avid contributor Rover 75 CDTi Connie SE Join Date: Apr 2011 Location: Dublin Posts: 149 Thanks: 5 Thanked 0 Times in 0 Posts	Every bulb works but! I have the bulb warning light on. EVERY bulb on the car lights, if I had a bad contact would I get bulb warning even thought he relevant bulb was lit? I have NCT (MOT) next week and even though no bulbs out, bulb warning light would be a problem over here (Ireland). Any ideas? I have double checked and everything works, high beam, low beam, parking lights, front fogs, rear fogs, high mounted brake light, number plate lights (both), brake lights all six indicators, reversing lights, everything lights. __________________ You want to go where? Oh I wouldn't start from here...............

16th May 2012, 13:49	#3
sherodub Avid contributor Rover 75 CDTi Connie SE Join Date: Apr 2011 Location: Dublin Posts: 149 Thanks: 5 Thanked 0 Times in 0 Posts	No, no bulb changes. Might try the corroded contacts issue on the festoon bulbs on the number plate lights, I CAN see some misting/tiny water droplets in them even though both plate lights are lit. Cheers Flyer (Hail Hail ...cough) __________________ You want to go where? Oh I wouldn't start from here...............

16th May 2012, 15:00	#5
sherodub Avid contributor Rover 75 CDTi Connie SE Join Date: Apr 2011 Location: Dublin Posts: 149 Thanks: 5 Thanked 0 Times in 0 Posts	Cherers PAB, good to know re the side indicators and reverse lights, as my reverse lights are LED but have been working for a year or so with no probs so its not a canbus issue. With tool box sitting on the brake pedal, car in reverse gear with handbrake on, every light in the back of the car is lit, so no subsituting going on. __________________ You want to go where? Oh I wouldn't start from here...............

16th May 2012, 15:18	#6
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	My money will be on the number plate lamps......check the contacts and pop a new pair in. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

16th May 2012, 20:00	#7
StevenWilliams This is my second home Rover 75 Saloon 2.5 V6 British Racing Green. 81,000 miles and counting Join Date: Apr 2008 Location: Crawley, West Sussex Posts: 6,183 Thanks: 0 Thanked 2 Times in 2 Posts	I had LED lights that were fine for years but then I started to get flashing xenons.. it turned out to be my canbus friendly LED number plate lights were playing havoc with the canbus system. replaced them and my problems went away so I'd defo swap them out as part of a test. __________________ [SIGPIC][/SIGPIC] Rover 75 2.5 2000 Club SE. British Racing Green. MEMBER NUMBER: MMMDCCXXVI Looking for: 7 seater

16th May 2012, 13:41	#2
FLYER Banned rover75 cdti AUTO TOURER 160 bhp. Join Date: Jul 2010 Location: Glasgow Posts: 35,346 Thanks: 2,985 Thanked 3,685 Times in 2,463 Posts	Have you recently changed a bulb ???? Have you considered the corroded plate lights scenario. ?????

16th May 2012, 14:08	#4
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	Remember if you have a brake light out the system compensates and will light the fog etc. Carefully check each bulb in the rear cluster.The side repeaters and reversing lights are not on the bulb failure circuit. Thread moved to the Technical Help forum,redirect left in the old location.

16th May 2012, 23:55	#8
ROVERX501 Avid contributor Rover 75 2.5 Auto Saloon Join Date: Feb 2012 Location: Durham Posts: 149 Thanks: 3 Thanked 0 Times in 0 Posts	Hi, I have the light on the dash illuminates every so often, if I use the passenger side indicator the indicator flashes very quickly, and the driver side flashes as normal, then all of a sudden the rapid flashing returns to normal, and the warning light goes out as well, so this maybe coincidence but I wriggled a black wire coming from the driver side rear cluster and the rapid flashing from the passenger side returned to normal, so I personally seem to have a bad earth somewhere on one of the light clusters at the rear. This maybe what you have, as it looks as though a bad earth will illuminate the warning light on the dash.

21st May 2012, 14:21	#9
sherodub Avid contributor Rover 75 CDTi Connie SE Join Date: Apr 2011 Location: Dublin Posts: 149 Thanks: 5 Thanked 0 Times in 0 Posts	Solved Thanks for all the suggestions. Solved it the old fashioned way. I took out every bulb and re-fit them to no avail. Then out of pure frustration I performed a 'percussion adjustment' on the rear left light cluster and the ****** fault light went out!!!! Typical. __________________ You want to go where? Oh I wouldn't start from here...............

21st May 2012, 14:24	#10
FLYER Banned rover75 cdti AUTO TOURER 160 bhp. Join Date: Jul 2010 Location: Glasgow Posts: 35,346 Thanks: 2,985 Thanked 3,685 Times in 2,463 Posts	Good old Irish brute force .