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Bending Lights inoperative - but no fault warning…

Posted: Mon Nov 29, 2021 8:48 pm
by Noodles
Hi there,

We have a 2020 D4 R-Design Pro fitted with the bending (and cornering) lights.

We don’t drive a huge amount at night - so aren’t sure when the problem arose (possibly during a full main dealer service in which the software could/would/should have been updated?) - but the bending feature definitely used to work but does not anymore. The cornering lights still activate (and deactivate if switched off via the console).

There are no fault symbols, codes or messages…

Any ideas? The only thing I can glean from the manual is that the feature is ambient-light-level dependant - but I’ve tried it in complete darkness as well as dusk. The windscreen in front of the sensor area (I.e. the module in front of the centre mirror) is clean - but in any case, blocking it in some way would, presumably, cause the system to activate in brighter conditions than planned - not stop it working in darker conditions…

Re: Bending Lights inoperative - but no fault warning…

Posted: Tue Nov 30, 2021 12:53 am
by bdalameda
I had this happen once when I parked on a severe downward incline. When I started up at night and the headlights went through the leveling cycle the headlights would not bend. After driving a while and stopping and restarting they began to function normally. I have not had any issues since.

I would try disabling the bending headlight function, turn off the vehicle completely and then re-enable the feature and see if it resets.

Dan

Re: Bending Lights inoperative - but no fault warning…

Posted: Wed Dec 01, 2021 9:43 am
by Noodles
Thanks Dan - I’d not thought to try disabling it and then turning the vehicle off - I’d only tried cycling the function running. The other thing(s) I thought of trying were a) trying the other key fob (even though bendy lights are not part of the driver Profile) and b) the Factory Reset option (likely ditto).

Spoke to my VMD service department and they were unable (or unwilling!) to suggest anything other than booking it in…

Re: Bending Lights inoperative - but no fault warning…

Posted: Thu Dec 02, 2021 8:21 pm
by Noodles
I tried the reset trick - and changing the driver profile to an unused one - and neither worked, unfortunately….

Re: Bending Lights inoperative - but no fault warning…

Posted: Fri Dec 03, 2021 1:58 pm
by bba
Mine don’t swivel when the car is stationary but do on the move.

Re: Bending Lights inoperative - but no fault warning…

Posted: Tue Feb 01, 2022 8:34 pm
by Noodles
Update:

We eventually booked the car into our main dealer. They returned it after a day and said that they’d needed to reset it and update the SW again - but when that finished, it started working again for them… Warranty job.

Great, we thought… Just tested them tonight and they do *not* work if dipped headlights (our default - we leave this on 24x7) are selected on the stalk…

If I change the stalk to Auto (which we dislike - no rear running lights in the uk and have to rely on the DRLs to be seen…) - it works!

Anyone else get this? We definitely used to get active bending on the standard dipped setting before - and the electronic manual seems to confirm this expectation (“ The function is only active in weak daylight or darkness and only when the car is moving and dipped beam is switched on.”)

Re: Bending Lights inoperative - but no fault warning…

Posted: Wed Feb 02, 2022 12:26 am
by Felindre
I'm puzzled by your comment about the rear lights, because mine has full time front and REAR DRL with the switch in auto. Admittedly I don't have the bending lights, but I'm pretty sure all Volvo's I've seen have rear lights on in the daytime.

Re: Bending Lights inoperative - but no fault warning…

Posted: Thu Jun 02, 2022 1:24 pm
by Gharabli
Hello Noodles.

My take is the last time I visited the dealer which was around October 2021, the software update made it that active bending lights only work with auto dipped. It used to work with manual dipped. I didn't look too much into it until I took the car to the dealer last week and told them it's not working. We kept trying until I figured it only works with auto dipped. Of course they were clueless..haha. Mine is an XC90, so I guess the software was for al Volvo models. Hope this makes you rest in ease :)

Re: Bending Lights inoperative - but no fault warning…

Posted: Sat Jun 04, 2022 11:03 pm
by ChrisLF
My rear lights aren't illuminated when the front DRLs are on during daylight.

Why do you need the rear ones to be on?

Re: Bending Lights inoperative - but no fault warning…

Posted: Sat Jun 04, 2022 11:20 pm
by Felindre
I'll repeat, on my car with the switch in auto both front and rear lights are illuminated with ignition on. I double checked after this was mentioned before.

I like rear lights illuminated day or night so it's obvious from the rear the car is active. Nobody these days leaves parking lights on so it won't confuse anyone.