I have noticed an issue with my L405. The headlight aim is too low, driving the car at night, it was as if the main beam was pointing to the ground and I could not see 10 meters in front.

I have the auto levelling adaptive lights that all seemed to work fine in the past. Also worth mentioning that this has happened to both lights. Usually when the headlights come on the tend to self level (turn on then adjust themselves). This is no longer the case, they just turn on. No faults.

I have tried to manually adjust the lights from the headlamp unit but again the aim seems to be low, it is as if the motor has seized, is this possible? When adjusting the left headlight, I left hearing a creak when it reached the top as if something was broken inside the unit.

Has anyone come across this issue before? Can this be repaired or will I be looking at new headlights?

Thanks in advance for your help.

Just had this on my daughters car, you need to check the self levelling plug is plugged home correctly or the bracket or rod isn't broken, she had to have a new alternator fitted and they didn't plug it back in correctly so it defaulted to about 10ft in front of the car.

Worth a look just to check, you will find the lights come straight back to normal straight away.

Amazing thank you, do you know here the sensor is located by any chance?

So, I had an issue on my L460, resulted in problem being fixed but created a new problem, the dealer had fiddled with something and forgot to plug the self levelling sensor back in, so I found it and plugged it in and hey presto, worked perfectly. My daughters Disco Sport had a new alternator fitted a coupe of weeks ago and she had the same problem also, they forgot to plug the connector in properly, (on disco sport its on drivers side front axle)so again headlights were lighting up 2ft in front of car. I also checked the plugs at the top of suspension strut in engine bay as well. And again a 30 second fix.

L460 locations below,

Click image to enlarge

Amazing, thank you. I will have a look, Hopefully, I will have good news to report back.

Good luck, I hope its as simple as my problem.

Just found this for L405, looks like L460 as I thought.

Ive tried to locate the self levelling sensor but it is dark, I will try again tomorrow as I will also be able to put the car on the ramp.

There are no faults that come up but I thought to plug in the GAP tool to see if it picks up any faults. If the self levelling sensor is not connected, would it trigger a fault code to come up on the dash or the GAP tool? The suspension works as it should and no issues raising or lowering.

If an arm is broken it wont throw a fault I wouldn't have thought

Spent the morning trying to figure out if the fault is from the self levelling sensor or the headlights. The sensors all seem to be connected and there is no damage to any or the brackets.

I’ve raised an lowered the car to see if there is any movement to the headlight beam but the light does not move or adjust. When turning on the lights, it does not adjust as it normally should. It just turns on. No faults coming up on dash or GAP tool.

I’ve tried to manually adjust the lights once again taking them to their lowest then the highest position. With the passenger headlight I can hear a grinding noise as it gets to the top position. It’s almost as if the adjuster in the headlight is grinding into something when I try to adjust it higher. Could this the fault causing the lights not to adjust and to stay in the lowest position?

I’ve read online about opening up a headlight and it sounds like a nightmare to DIY.

Does anyone know how to do a calibration, I have a GAP IID and my next attempt is to calibrate the lights before looking to replace the headlights as I cannot drive in the dark with them that low.

I have gone through the technical info on GAP but cannot find the calibrate headlights feature on the GAP tool

Before you try any calibration, I would use your GAP tool to read the heights and output voltage being supplied from each of the four suspension height sensors.

It may be one is giving a spurious output, despite looking ok (rod intact, plugged in, etc).

That would lead to headlight levelling issues, such as those you're encountering.

Supply voltage should be pretty close to 5v for each sensor. Normal output voltages should be in the range of 0 - 5v depending on the vehicle height / wheel articulation.

EDIT --> This doesn't explain the grinding noise you're hearing, though (having now read your post above again). But still worth a check that the outputs are within the expected range

Jon 1992 RR Classic 3.9 efi Vogue
2014 Disco 4 HSE
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Both my fatties now gone...
Previous: 2011 L322 4.4 TDV8 Vogue SE /// 2002 L322 4.4 V8 HSE /// 2009 Discovery 3 2.7 TDV6 XS /// 2004 Defender 90 TD5 /// 1993 110 V8 Snatch Landrover /// 2005 Discovery 3 2.7 TDV6 SE (Aus) /// 1990 110 Isuzu 3.9 County (Aus) /// 1976 Series III Trayback (Aus)