Instrument lights dimmer faulty

David1544 · May 8th, 2022, 11:14

The instrument light dimmer in my V60 D3 is experiencing an intermittant fault. At random, for no reason I can discern, the lights on the dashboard will dim to a point of near invisibility, and just as randomly wil restore to full brightness.
When they restore, the adjustment wheel becomes ineffective for a short time and then allows manual dimming.

Has anyone else experienced this fault and what remedy would be recommended?
Any and all help would be appreciated

David1544 · May 8th, 2022, 11:15

Quote:

Originally Posted by David1544

The instrument light dimmer in my V60 D3 is experiencing an intermittant fault. At random, for no reason I can discern, the lights on the dashboard will dim to a point of near invisibility, and just as randomly wil restore to full brightness.
When they restore, the adjustment wheel becomes ineffective for a short time and then allows manual dimming.

Has anyone else experienced this fault and what remedy would be recommended?
Any and all help would be appreciated

Prompt response would be much appreciated, thank you

nu11eaf · May 8th, 2022, 11:44

Have you got anything on the dash top that could be covering the light sensor, a screen cloth etc.

Fibrous · May 8th, 2022, 11:45

Can you get the dimmer switch checked or even replaced? Sometimes these things can be quite individual and need a process of elimination.

Clan · May 8th, 2022, 14:13

Quote:

Originally Posted by David1544

The instrument light dimmer in my V60 D3 is experiencing an intermittant fault. At random, for no reason I can discern, the lights on the dashboard will dim to a point of near invisibility, and just as randomly wil restore to full brightness.
When they restore, the adjustment wheel becomes ineffective for a short time and then allows manual dimming.

Has anyone else experienced this fault and what remedy would be recommended?
Any and all help would be appreciated

these are computer controlled so there could be a logical reason such as light levels near the critical switch over point .. although the threshold would be heavily damped to prevent this . worth a thought ..

giftgrub100 · May 9th, 2022, 10:22

Keep the setting up to the max, should only work at night or in dark areas, if when it comes on the switch is down low the dash will go dark.

David1544 · May 11th, 2022, 10:07

Quote:

Originally Posted by nu11eaf

Have you got anything on the dash top that could be covering the light sensor, a screen cloth etc.

I thought of that and have been careful not to obscure the sensor, thanks for your comment.

volvocamper · May 11th, 2022, 11:07

There was a thread a little while ago where someone felt their dimmer was faulty as it appeared not to work and to my surprise at the time mine appeared not to either but someone pointed out it only worked under certain circumstances (although cannot recall what they were) and when i tried mine under those circumstances it worked.
Sending this in hope whoever came up with the parameters may see it and be able to re-enlighten us all.

volvocamper · May 11th, 2022, 19:11

Just been out to my MY22 XC90 in my garage so semi dark, just opened the garage door allowing in some light (no window). Ignition is off but car unlocked and door opened. Dashboard lights come on and can be dimmed using the dimmer wheel control.
Not sure if yours does same David1544?

May 8th, 2022, 11:14	#1
David1544 New Member Last Online: May 16th, 2022 10:44 Join Date: Jun 2021 Location: Blackpool	Instrument lights dimmer faulty The instrument light dimmer in my V60 D3 is experiencing an intermittant fault. At random, for no reason I can discern, the lights on the dashboard will dim to a point of near invisibility, and just as randomly wil restore to full brightness. When they restore, the adjustment wheel becomes ineffective for a short time and then allows manual dimming. Has anyone else experienced this fault and what remedy would be recommended? Any and all help would be appreciated

May 8th, 2022, 11:44	#3
nu11eaf Premier Member Last Online: Yesterday 19:05 Join Date: Mar 2013 Location: Yorkshire man living in County Durham	Have you got anything on the dash top that could be covering the light sensor, a screen cloth etc. __________________ XC90 Inscription D5 Power pulse, 2017 MY, Savile grey, Blond Nappa, Leather dash/door tops, Walnut inlays, Dark tinted windows, Air suspension, Bliss/Cross traffic alert, Xenium/7 seat comfort/Family/Winter packs, 4 zone climate, Heated rear seats.

May 8th, 2022, 11:45	#4
Fibrous Senior Member Last Online: Apr 23rd, 2024 09:41 Join Date: Nov 2021 Location: Edinburgh	Can you get the dimmer switch checked or even replaced? Sometimes these things can be quite individual and need a process of elimination.

May 9th, 2022, 10:22	#6
giftgrub100 giftgrub100 Last Online: Apr 26th, 2024 08:34 Join Date: Jan 2022 Location: Cork	Keep the setting up to the max, should only work at night or in dark areas, if when it comes on the switch is down low the dash will go dark.

May 11th, 2022, 11:07	#8
volvocamper Master Member Last Online: Yesterday 20:52 Join Date: May 2010 Location: Norwich	There was a thread a little while ago where someone felt their dimmer was faulty as it appeared not to work and to my surprise at the time mine appeared not to either but someone pointed out it only worked under certain circumstances (although cannot recall what they were) and when i tried mine under those circumstances it worked. Sending this in hope whoever came up with the parameters may see it and be able to re-enlighten us all.

May 11th, 2022, 19:11	#9
volvocamper Master Member Last Online: Yesterday 20:52 Join Date: May 2010 Location: Norwich	Just been out to my MY22 XC90 in my garage so semi dark, just opened the garage door allowing in some light (no window). Ignition is off but car unlocked and door opened. Dashboard lights come on and can be dimmed using the dimmer wheel control. Not sure if yours does same David1544?

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