I’ve always wanted Lane Assist functionality in my car. It gives a glance on self-driving experience in our daily, a bit outdated car. Unfortunately it wasn’t possible for me to get a car already equipped with the camera. I’ll show you how to retrofit Lane/Light/Sign Assist without replacing windscreen.
MQB cars were equipped with two kind’s of camera:
- 5Q0 980 653 – Golf MK7 pre-facelift
- 3Q0 980 654 G – Golf MK7 after facelift
According to some unconfirmed information, it’s not possible to mix camera and ACC radar between facelift and prefacelift car. That’s why I’ve decided to go with old version of camera.
It’s worth to mention that you don’t need ACC to have a Lane Assist camera (and vice versa).
My shopping basket contained:
- 5Q0 980 653 F camera
- Bracket and camera heater taken from a broken windscreen (not required)
- Camera connector with pins
- Golf MK7.5 rear view mirror (from Passat B8 will also be fine) – 3G0857511AG
- Rear view mirror cover with camera cutout – 3G0858548A9B9
- Approx. 40cm 24pin 0.5mm raster FPC TTL cable extension band (found mine on Aliexpress)
- 25pin 0.5mm raster cable adapter (found mine on Aliexpress)
If windscreen replacement is not an issue for you, you can go with that solution. Keep in mind that you will also need to replace mirror and the plastic covers as well.
Mandatory step for this thing to work is static calibration. You can either do it by yourself or use authorized service. Things that you’ll need to perform calibration:
- Calibration board VAS6430
- Service head unit VAS5054
- ODIS software
Calibration board can be downloaded from here – VAS 6430. Print it respecting dimensions presented below:
Pin 1 – CAN-L to ACC radar
Pin 2 – CAN-L to TIUL point
Pin 4 – Camera heater +
Pin 5 – GND (+ camera heater GND)
Pin 6 – + via fuse
Pin 7 – CAN-H to ACC radar
Pin 8 – CAN-H to TIUL point
Solution 1 – ugly proof of concept
Next step is related to camera installation on a windscreen. first trim your bracket to fit next to the mirror. Then use strong double sided tape (preferably black one) to attach it to the glass. Keep in mind to position it symmetrically to the top of a screen.
Calibration board have to be placed 150cm +/-2cm from the center of the front wheels (symmetrically!). Center of black dots on a white background must be set on the same height as a camera lens (around 120-125cm from ground – depends on a suspension and wheels).
Solution 2 – simple and clean
In order to keep the OEM-like look we will use original cover from light assist mirror. The main idea is to mount the camera lens into rear view mirror and hide the module’s PCB over the ceiling.
You need to disassemble the front assist camera – it’s fixed on four torx screws.
You need around 40cm of extension cable (24pin 0.5mm FPC TTL) to keep it nice and tidy.
In order to preserve stability of this system, you need to precisely measure and prepare T-shaped metal adapter to mount the camera lens to the mirror chasis. Use a screw on the top to fix it together – keep it as as steady and leveled/aligned as possible. You can route the extension cable inside the mirror mount. You will need to use a dremel to make a little more space to pass the cable through the mirror leg.
As I’ve already had the hodler for my 5Q0 camera I’ve glued it to the ceiling, just above the ceiling light. There is plenty of space to fit it. I had to make a cutout in the module case to keep the cable in a straight line.
Light Assist camera is a bit smaller the ours, you will need to do a bit of polishing to make this hole bigger. At the end, carefully attach mirror to the windscreen, connect the camera ribbon to the pcb and make sure that cable won’t be obstructed during regular use.
- Attach the extension cable with an adapter to the camera lens
- Mount the camera lend to the mirror
- Attach the mirror to the windscreen
- Route the cable to the ceiling (use the same path as mirror harness)
- Connect extension cable to the PCB.
- Glue the PCB to the ceiling (make sure to do it right, camera module gets really hot thus some gluing methods may not be heat resistant).
- If you are getting camera interference error, that means you haven’t placed the extension cable correctly. Pay attention when connecting the ribbon, as there is only 0.5mm raster – it’s easy to miss-align. I’ve used magnifier to do it.
Calibration procedure have to be done using ODIS:
- Run ODIS-S diagnostic tool
- Click on Diagnosis
- Scan – find A5 camera on the list
- Under A5 camera you will notice calibration error – select it and run diagnosis (first button on the bottom)
- On the next step you’ll need to measure height from ground to the center of each fender.
- Run the calibration.
- In case of error occurrence, you’ll need to adjust calibration board or camera position on screen.
- After successful calibration you’ll see screen as below:
The last part involves VCDS coding. It’s fairly straightforward, you’ll need to adjust coding for ABS, BCM, Steering Assist and Camera itself. At the very end assistants menu will appear on MFD: