bulb failure warning light

majmo46 · 23rd March 2009, 13:51

my bulb warning light as come on however checking all bulbs i found all to be ok and working anyone got a clue what it could be

Greeners · 23rd March 2009, 13:54

Welcome along

It'll be either one or both of the number plate lights, or a stop light

JohnDotCom · 23rd March 2009, 13:54

Have you checked the two number Plate bulbs?

On our clever cars check the rear side lights properly as when a rear sidelight blows it uses the Stop(brake) light as a backup.

Welcome to the Club.

majmo46 · 23rd March 2009, 13:57

Quote:

Originally Posted by Greeners

Welcome along

It'll be either one or both of the number plate lights, or a stop light

checked number plate light thanks i'll try brake lights

majmo46 · 23rd March 2009, 13:59

Quote:

Originally Posted by JohnDotCom

Have you checked the two number Plate bulbs?

On our clever cars check the rear side lights properly as when a rear sidelight blows it uses the Stop(brake) light as a backup.

Welcome to the Club.

thanks for yr welcome i've checked number plate lights they are ok so i'll check brake lights

majmo46 · 23rd March 2009, 14:09

Quote:

Originally Posted by majmo46

checked number plate light thanks i'll try brake lights

i've now checked brake lights still no joy i'm affraid

majmo46 · 23rd March 2009, 14:13

Quote:

Originally Posted by majmo46

thanks for yr welcome i've checked number plate lights they are ok so i'll check brake lights

i've now checked brake lights but warning light still remains on

JohnDotCom · 23rd March 2009, 14:49

Rear Fog lights also trigger bulb warning light,
Easier when you have the Message centre display as it tells you what bulb has gone.
Often the bulb can be OK then a couple of days later it blows.
I think the alteration in resistance of failing bulb causes the warning early sometimes.

T-Cut · 23rd March 2009, 22:31

Quote:

Originally Posted by JohnDotCom

I think the alteration in resistance of failing bulb causes the warning early sometimes.

This is why number plate lights are favourite culprits. They may be on OK, but the corrosion on the holders puts up the running resistance and the warning pops before the bulb. I'd open up the numberplate bulb holders and give 'em a fettle and a dose of WD40. Worth a shot.

23rd March 2009, 13:51	#1
majmo46 Newbie rover 75 1.8 club Join Date: Mar 2009 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	bulb failure warning light my bulb warning light as come on however checking all bulbs i found all to be ok and working anyone got a clue what it could be

23rd March 2009, 13:54	#2
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	Welcome along It'll be either one or both of the number plate lights, or a stop light __________________ *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]

23rd March 2009, 13:54	#3
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Have you checked the two number Plate bulbs? On our clever cars check the rear side lights properly as when a rear sidelight blows it uses the Stop(brake) light as a backup. Welcome to the Club. Last edited by JohnDotCom; 23rd March 2009 at 13:57..

23rd March 2009, 14:49	#8
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Rear Fog lights also trigger bulb warning light, Easier when you have the Message centre display as it tells you what bulb has gone. Often the bulb can be OK then a couple of days later it blows. I think the alteration in resistance of failing bulb causes the warning early sometimes.