my journey to activating DLA on a MY17 Tiguan

[Tob35]

Yep. What Simon said.

The masked area in the center widens to cover both. Eventually it drops out to just being dipped beam if it needs to.

I was pretty impressed with how well it handled winding road and two way traffic.

[Simonr23]

It can only mask one area, but it can change the width of the area. Eventually it gives up(limit of mirrors and sideways motors) and shuts off 1 or both high beams- as needed.

[Guest001]

Well thats good to know as whilst I did it awhile ago I havent been out at night to try it .


One question If you have a car in front of you and another one approaching how does it split the lights to keep both in the dark (so to speak)
Does it have two masked bits or just one wider one and lights up the edges on each side of road

[Tob35]

Massive props to Phonebooth. Perfect walkthrough mate. You have managed to succinctly detail exactly what is needed to be done. Worked a treat. First go. Thanks for taking the time to write it up!

Managed to drive along a dark road with traffic in front and on comming just now. The lights are so much better. For those in Brisbane familiar with Jinker track the DLA was so good. Lighting up both sides of the road and effectively masking the car in front and oncomming cars. Even through the twisty bits!

[Simonr23]

Not in my experience. I did mine on my sloped driveway and it still made them correct. I suspect it references the rear suspension height sensor, rather than a mercury switch- or alternative levelling measurements.

[PDMJO]

My understanding is that when you perform the headlight basic setting, it calibrates your lights, hence being on a level surface is required. If you're inside your car, your car technically isn't "factory level", albeit only very slightly off.

Interesting. Does this mean if we wanted to raise our headlight level, we could park on an incline, and therefore it would calibrate the headlights higher than if on flat ground? And vice versa?

[phonebooth]

Not sure if this has been covered previously, it's in regards to the highway/"country light" setting with DLA (see Audi's teminlogy).

Previously with DLA activated, I had the issue of the RHS lights always being on low beam at speeds above 80kmph, that is the "country light" pattern. Great if you are on the Hume, not so great when on a two lane B or C road in the country.

I've played with Module 4B as described in instructions in this thread and disabled Byte 10, Bit 3 "Highway_light" via long coding. Counter-intuitively, I've now got the "motorway" beam pattern for all scenarios with the usual adaptive beam forming for masking traffic ahead or oncoming cars. Less useful on the Hume/split carriage-ways, but great for back roads.

my long coding for this mod in Module 4B is now "0000 00 05 01 00 08 56 07 10 57 05 0A" - this was implemented and tested in a MY18 SWB R-line with "mid" lights. No faults recorded

I did the whole head unit reboot, factory reset light settings and "basic setting" routine after making the change.

Hope that helps people if they find they have dipped RHS beams at speeds above 80kmph.

Ta

BinChook

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Nice find and thanks for sharing.

With DLA activated on my car, if there's no traffic in front and the speed is above the DLA activation speed, I get high beam on both lights. It only deviates according to oncoming traffic, traffic in front or it detecting street lights.

I didn't go outside to see if the car is on level ground (it is)... but i don't understand why being outside the car makes a difference here?

My understanding is that when you perform the headlight basic setting, it calibrates your lights, hence being on a level surface is required. If you're inside your car, your car technically isn't "factory level", albeit only very slightly off.

[BinChook]

Not sure if this has been covered previously, it's in regards to the highway/"country light" setting with DLA (see Audi's teminlogy).

Previously with DLA activated, I had the issue of the RHS lights always being on low beam at speeds above 80kmph, that is the "country light" pattern. Great if you are on the Hume, not so great when on a two lane B or C road in the country.

I've played with Module 4B as described in instructions in this thread and disabled Byte 10, Bit # for "Highway_light" via long coding. Counter-intuitively, I've now got the "motorway" beam pattern for all scenarios with the usual adaptive beam forming for masking traffic ahead or oncoming cars. Less useful on the Hume/split carriage-ways, but great for back roads.

my long coding for this mod in Module 4B is now "0000 00 05 01 00 08 56 07 10 57 05 0A" - this was implemented and tested in a MY18 SWB R-line with "mid" lights. No faults recorded

I did the whole head unit reboot, factory reset light settings and "basic setting" routine after making the change.

Hope that helps people if they find they have dipped RHS beams at speeds above 80kmph.

Ta

BinChook

[PDMJO]

Ok, figured out the issue - I didn’t realise the ‘bits’ started at bit 0. So instead of ticking bit 6 for example, I was actually ticking bit 5. Thanks all!

[davman]

I had something similar happen to me, so I just went and rechecked the last set of steps in Module 4B - and I must of missed one of the final steps, as once I re-did them all again, everything worked fine, and the errors disappeared.

I have just got back from some country winding road night time driving, and the DLA system works really well.

[Guest001]

My only other thought is maybe some of the coding done for HBA doesn't overlap with DLA, therefore something is amiss?

Has anyone else coded DLA whilst HBA was activated?

Yes I had done that You go outside the car to make sure it does what it says You cant tell from inside.

If one is given such detailed instructions it pays to follow them step by step, whether you think it matters or not

[PDMJO]

Hey Phonebooth/All,

so i've done all those steps, and everything went as expected per your write-up, but now there's no headlight symbol with the 'A' in it, and if i turn on my highbeam manually, i get an error popping up saying 'error Light Assist'.

Has anyone else come across this?

My only other thought is maybe some of the coding done for HBA doesn't overlap with DLA, therefore something is amiss?

Has anyone else coded DLA whilst HBA was activated?

[PDMJO]

Go over it again slowly and carefully including the bit you do outside the car.

I didn't go outside to see if the car is on level ground (it is)... but i don't understand why being outside the car makes a difference here?

[Guest001]

You have obviously done something wrong then because it definitely works Did you push the lever past normal away from you

Go over it again slowly and carefully including the bit you do outside the car.

Just a thought Have you got the correct headlights

[PDMJO]

Here are the instructions I've sent to other users to get DLA working on a '19 Tiguan Highline. Credit to AS Coding @ www.ascoding.ch as my instructions are based on his/hers but with the required changes for the '19 Highline.

Sorry it's so long but I've documented each step I took in detail. Here we go...

Module 09 - Central Electrics

1. Connect OBD Eleven to your car.
2. Turn the ignition on, not the engine! These changes won't apply if the engine is on. I've tried it.
3. Go to central electrics module 09.
4. Select adaptions from the list.
5. Find "Fernlicht_Assistent" and go into that menu.
6. Change "Erweiterte Fernlichtsteuerung" to AFS FLA Fernlicht (GLW:MDF).
7. Change "Menusteuerung Fernlichtassistent" to present.
8. Change "Menusteuerung Fernlichtassistent Worksteinstellung" to present.
9. Save your adaptions using the green tick.

Module A5 - Front Sensor

1. Got to module A5 - Front Sensor.
2. From the list select "long coding".
3. At the top of the page click the little 0|1 to go into Byte/Bit format.
4. Find byte 19. Change it to hex value 30. You can change the hex values by tapping on the hex value in the app.
5. Find byte 21. Change it to hex value 40.
6. Save your coding using the green tick.

Module 4B - Multifunction Module

1. Go to module 4B.
2. In the list, select long coding.
3. At the top of the page click the little 0|1 to go into Byte/Bit format.
4. Go to byte 9. Change the hex value to 10.
5. Go into byte 10. Tap the checkbox on bit 6 to enable it. Make sure bit 5 is unticked.
6. Go to byte 11. Tap the checkbox on bit 2 to enable it.
7. Use the green tick to save your adaptions.

BEFORE YOU GO ANY FURTHER...

1. Soft reset your head unit by holding the power button until the head unit powers down then powers back on. You can stop holding the power button when you see the VW logo appear.
2. On the head unit go to Menu > Vehicle > Factory Defaults > Lights

Running headlight basic settings

1. Go to module 4B.
2. From the list, select faults.
3. You will see a fault saying "No headlight basic setting" or similar.
4. Down the bottom of your phone screen you'll see a red circle with a trash can. Tap on hold on it. This will try to clear the fault. On mine, the fault didn't clear but this seems to be a mandatory step.
5. Get out of your car and ensure it's on level ground.
6. Go back to the module 4B main menu.
7. In the list of options go to "basic settings"
8. You'll get another list with some settings you can run.
9. Tap "Headlight basic settings".
10. Tap and hold the green tick at the bottom of your screen. You'll notice the headlights pivot out a tiny bit.
11. Go back to the basic settings menu. Select "acknowledge headlight basic settings" (or similar).
12. Tap and hold the green tick at the bottom of your screen. The headlights will pivot back to a "normal" position.
13. Go back to the module 4B main screen and go back into faults.
14. The headlight basic settings fault is still there. This is the moment of truth. Tap and hold the red circle again. Your headlights should dance and the fault should clear.

Go back into the car and run your head unit reset and light factory default again just for good measure. Turn the ignition off, then back on. You should be fault free and enjoying DLA!

Hey Phonebooth/All,

so i've done all those steps, and everything went as expected per your write-up, but now there's no headlight symbol with the 'A' in it, and if i turn on my highbeam manually, i get an error popping up saying 'error Light Assist'.

Has anyone else come across this?