Intermittent adaptive headlight warning
#1
Intermittent adaptive headlight warning
This has now happened twice. The first time, driving with headlights on, the warning light came on suddenly and stayed on. I cleared it by starting the car with lights set to on (and watched them do their thing at startup) and the warning went away.
Now today, several weeks later, the warning came on again, this time driving with lights off. Again, after returning home, I set the headlights to 'on' and then started the car, and the warning cleared.
In both incidents I think I went over a bump when it happened. So I'm thinking maybe it's a bad connector, loose wire, or poor ground. When I get round to doing the air filters I'm going to examine the grounds in the wheel arches.
Now today, several weeks later, the warning came on again, this time driving with lights off. Again, after returning home, I set the headlights to 'on' and then started the car, and the warning cleared.
In both incidents I think I went over a bump when it happened. So I'm thinking maybe it's a bad connector, loose wire, or poor ground. When I get round to doing the air filters I'm going to examine the grounds in the wheel arches.
#2
Could be a ground connection behind the wheel on the right hand side of the wheel, the lug is open to "atmosphere" - mine was intermittant and corroded.
I posted some pics of one of the ground lug locations here:
https://www.jaguarforums.com/forum/x...7/#post2673680
And what I did here:
https://www.jaguarforums.com/forum/x...cators-240302/
I posted some pics of one of the ground lug locations here:
https://www.jaguarforums.com/forum/x...7/#post2673680
And what I did here:
https://www.jaguarforums.com/forum/x...cators-240302/
Last edited by McJag222; 09-15-2023 at 02:23 PM.
The following users liked this post:
guy (09-17-2023)
#4
#5
#6
I wasn't able to determine whether either lamp had actually stopped moving, and the fault hasn't recurred (yet). On both occasions, firing up the car with lights ON cleared the fault and I saw the up/down left/right thing happening at start up.
To be honest, the one time I've driven the car in the dark since I bought it, I didn't really notice the movement anyway, even at parking speeds. I guess it's a subtle effect? Maybe when my new glasses come next week that'll make a difference!
To be honest, the one time I've driven the car in the dark since I bought it, I didn't really notice the movement anyway, even at parking speeds. I guess it's a subtle effect? Maybe when my new glasses come next week that'll make a difference!
#7
Trending Topics
#9
I assume that since (a) the warning light came on and (b) it's not on now, the adaptive headlights have to be working.
#10
Hmm... I will have to do a controlled experiment - at night, line up towards a wall or garage door and observe. To be fair it was probably difficult to observe on that one trip I made because I was mainly driving in an urban setting with bright street lamps everywhere.
I assume that since (a) the warning light came on and (b) it's not on now, the adaptive headlights have to be working.
I assume that since (a) the warning light came on and (b) it's not on now, the adaptive headlights have to be working.
#11
Oh indeed - I've taken note of your advice on that. My pathetic excuse is I'm so busy with work at the moment I can't find the time to put the car on stands and take the wheels and liners out. I'm saving that job for when I put in new air filters and spray out the MAFs.
#12
Curiosity piqued, I popped out to the car at dusk and:
set headlights to ON and then started the engine
saw the lights do their calibration thing
turned the wheel gently to one side
nothing happened until a quarter turn, then the corner light came on - the one that comes on with the indicators.
The corner lights also came on if I operated the indicators, regardless of steering position.
I didn't see the main lights moving.
The car was stationary and in park.
So, this sort of corresponds to what the owners manual describes as the "Cornering or static bending lamps", not the "The Adaptive Front Lighting System (AFS)" However, the spec sheet for my car which I obtained from the original supplying dealer says "Headlamp variant: Adaptive Front Lighting". (Also, I believe all MY10 XKRs had AFS as standard.)
But, my reading of the owners manual suggests 'static bending lamps' are triggered (only) by the indicator being on.
So... various possibilities. The spec sheet is wrong. The owners manual is wrong. The AFS is broken but not displaying an error. The AFS system only works if the car is moving/in drive/or something. There's a setting either in the vehicle prefs or in module programming that turns this functionality on and off.
My first rabbit hole with this car.
set headlights to ON and then started the engine
saw the lights do their calibration thing
turned the wheel gently to one side
nothing happened until a quarter turn, then the corner light came on - the one that comes on with the indicators.
The corner lights also came on if I operated the indicators, regardless of steering position.
I didn't see the main lights moving.
The car was stationary and in park.
So, this sort of corresponds to what the owners manual describes as the "Cornering or static bending lamps", not the "The Adaptive Front Lighting System (AFS)" However, the spec sheet for my car which I obtained from the original supplying dealer says "Headlamp variant: Adaptive Front Lighting". (Also, I believe all MY10 XKRs had AFS as standard.)
But, my reading of the owners manual suggests 'static bending lamps' are triggered (only) by the indicator being on.
So... various possibilities. The spec sheet is wrong. The owners manual is wrong. The AFS is broken but not displaying an error. The AFS system only works if the car is moving/in drive/or something. There's a setting either in the vehicle prefs or in module programming that turns this functionality on and off.
My first rabbit hole with this car.
#13
#14
#15
#16
Hi. My car ‘10 XKR cab occasionally has the adaptive lamp warning come on and flash at me. I found that if I turn off the ignition and on again three times (without the foot on the brake except for the third time thereby finally starting the car) it will clear the warning. Don’t ask me how I discovered that but it works every time. This has been my fix for a couple years. Sometimes it will go months before happening again.
Scott
Scott
#17
I have had intermittent warnings over the 10 years I've owned my 2010 XKR. Surefire way that I've cleared the warning is to turn off the car and lock the doors with the key fob and then unlock and lock again. Most of the time that will clear it and it won't come back for months or even years. Sometimes, it's more stubborn, and in addition to locking and unlocking the car, with an open hand, I will slug each headlamp three or four times, very hard, then unlock the car and start the engine. That procedure has never failed to clear the warning, and it typically does not return for quite a long time.
#18
#19
I had a play on the way home from work last night and the corner lights on my '10 XKR come on when stationary if I turn the steering wheel backwards and forwards. The indicators were off.
#20
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)