Bulb Failure Message - Page 3

Leeds Lad · Feb 18th, 2009, 23:13

There is always a set of lamps that most people miss and it's the number plate lights, these are the favourites to corrode. Not sure if this is the problem but when I did the electrics on Jags with bulb fail on and no obvious bulb out, this is where we got used to head straight to.

Clan · Feb 19th, 2009, 18:19

Quote:

Originally Posted by Leeds Lad

There is always a set of lamps that most people miss and it's the number plate lights, these are the favourites to corrode. Not sure if this is the problem but when I did the electrics on Jags with bulb fail on and no obvious bulb out, this is where we got used to head straight to.

The only lights monitored are the tail lamps , stop lamps and Dipped headlamps , Possibly indicators too but they never go .

Leeds Lad · Feb 20th, 2009, 00:12

Wasn't sure as to what were monitored and weren't, just from memory on the Jags there were hot checks, namely indicators as these could only be monitored during use and cold checks which checked all other bulbs, whether in use or not. Always remembered flustered owners coming in and explaining they had been around the cars many times to check all the bulbs due to bulb fail showing, only for us to put in a number plate lamp and be done in minutes.

jackass · Feb 20th, 2009, 08:02

Quote:

Originally Posted by Clan

The only lights monitored are the tail lamps , stop lamps and Dipped headlamps , Possibly indicators too but they never go .

I had a [Parking Light Failure] warning the other day, I had a front sidelight out so I swapped that, should I have been checking the taillights?

I read somewhere that there is provision for all bulb circuits to be monitored but in most markets it's only a select few that are fitted.

PaulR · Feb 20th, 2009, 08:25

Quote:

Originally Posted by jackass

I had a [Parking Light Failure] warning the other day, I had a front sidelight out so I swapped that, should I have been checking the taillights?

I read somewhere that there is provision for all bulb circuits to be monitored but in most markets it's only a select few that are fitted.

I had the same message on mine last week , it was a front parking lamp & one of the the " hidden & forgotten about " 2nd parking bulbs in the rear taillights.

John_C · Feb 20th, 2009, 10:46

I had the parking light failure too, it was one of the four red lights in the rear cluster. So it can either be the sidelights at the front of the car, one of the red side lights in the tail clusters at the side of the car, or one of the running lights in the rear clusters?!

It may as well just say "bulb failure" if it's not going to localise the fault a bit more than that

jordant · Mar 8th, 2009, 02:04

This has been a very helpful thread. I have a 1998 V70 with the same symptom: no dipped beam and failure indicator glowing in the dash. The relay provides system voltage to the nearby fuse box, but that system voltage is not at the headlights. I now suspect this shunt resistor as I have confirmed the fuses are intact. I do have high beams.

Where is this panel containing the shunt located in the 98 V70? The post about the P2 is specific to that model. Is mine in the same location?

jordant · Mar 11th, 2009, 01:51

Quote:

Originally Posted by jordant

. . . Where is this panel containing the shunt located in the 98 V70? The post about the P2 is specific to that model. Is mine in the same location?

I found the problem and have my dipped beams back. There is a conductor leading directly from the battery to the headlight assemblies. It has an in-line 25 Amp fuse. Rather, it had an in-line 25 Amp fuse. 10 years of current through that assembly left it roasty-toasty.

I replaced that 30 cm conductor, fuse assembly and fuse and now my dipped beams are back.

I still have a glowing "bulb failure" dashboard indicator. I'll replace both dipped beam bulbs and see if that helps. The tail lights are operative; I don't think that I have a failed brake light.

Onward.

gbXC · Mar 15th, 2009, 10:38

I too get the Bulb failure dipped beam and one of the lights goes out on my XC70 from 2005. If I switch off and on again both work fine. I notice it most after about quarter of an hour of fast driving.

I've been complaining for a long time to my dealer in Bedford but they cannot find anything wrong.

Clan · Mar 15th, 2009, 11:52

Quote:

Originally Posted by jordant

I found the problem and have my dipped beams back. There is a conductor leading directly from the battery to the headlight assemblies. It has an in-line 25 Amp fuse. Rather, it had an in-line 25 Amp fuse. 10 years of current through that assembly left it roasty-toasty.

I replaced that 30 cm conductor, fuse assembly and fuse and now my dipped beams are back.

I still have a glowing "bulb failure" dashboard indicator. I'll replace both dipped beam bulbs and see if that helps. The tail lights are operative; I don't think that I have a failed brake light.

Onward.

That wiring and fuse is non standard , someone has done some poor modification ...

Mar 15th, 2009, 10:38	#29
gbXC G Last Online: Mar 1st, 2012 21:44 Join Date: Oct 2008 Location: Bedford	Bulb Failure Dipped Beam I too get the Bulb failure dipped beam and one of the lights goes out on my XC70 from 2005. If I switch off and on again both work fine. I notice it most after about quarter of an hour of fast driving. I've been complaining for a long time to my dealer in Bedford but they cannot find anything wrong. __________________ Regards, G

Feb 18th, 2009, 23:13	#21
Leeds Lad Leeds Lad Last Online: Nov 15th, 2023 19:57 Join Date: Nov 2008 Location: Leeds	There is always a set of lamps that most people miss and it's the number plate lights, these are the favourites to corrode. Not sure if this is the problem but when I did the electrics on Jags with bulb fail on and no obvious bulb out, this is where we got used to head straight to.

Feb 20th, 2009, 00:12	#23
Leeds Lad Leeds Lad Last Online: Nov 15th, 2023 19:57 Join Date: Nov 2008 Location: Leeds	Wasn't sure as to what were monitored and weren't, just from memory on the Jags there were hot checks, namely indicators as these could only be monitored during use and cold checks which checked all other bulbs, whether in use or not. Always remembered flustered owners coming in and explaining they had been around the cars many times to check all the bulbs due to bulb fail showing, only for us to put in a number plate lamp and be done in minutes.

Feb 20th, 2009, 10:46	#26
John_C Allons-y! Last Online: Jun 8th, 2020 15:32 Join Date: Dec 2004 Location: Winchester	I had the parking light failure too, it was one of the four red lights in the rear cluster. So it can either be the sidelights at the front of the car, one of the red side lights in the tail clusters at the side of the car, or one of the running lights in the rear clusters?! It may as well just say "bulb failure" if it's not going to localise the fault a bit more than that

Mar 8th, 2009, 02:04	#27
jordant New Member Last Online: Oct 30th, 2009 02:52 Join Date: Mar 2009 Location: Lakeland	This has been a very helpful thread. I have a 1998 V70 with the same symptom: no dipped beam and failure indicator glowing in the dash. The relay provides system voltage to the nearby fuse box, but that system voltage is not at the headlights. I now suspect this shunt resistor as I have confirmed the fuses are intact. I do have high beams. Where is this panel containing the shunt located in the 98 V70? The post about the P2 is specific to that model. Is mine in the same location?

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