Can I Add Adaptive Cruise Control?

[f1racer328]

As I know, all ECU have ACC control and main problem – it's radar firmware because this thing doesn't know "what is LR4/Discovery 4". If your LR4 will be RRS – it should work

What parts did you buy?

Just the radar unit + steering wheel buttons?

Any additional wiring harnesses? If it's only $300 or so and a firmware flash I'd be interested in doing this...

 

[iSheeZ]

@f1racer328 In my case:
- Radar
- Steering wheel buttons
- Mounting bracket (I used LR060076 with modifications or you can try to find bracket LR062475)
- Connector for radar (I used LR023028)
- 5pc wires (x2 CAN, power, ignition, ground)

And of course I used specific device (almost $200). It was not developed for ACC. As I said - I used it for proof of concept and it works but this device is overpriced and not for this job. I think it is possible to develop small PCB for ACC.

Also you can try to reflash LR4 as Range Rover (or Range Rover Sport) and ACC will work without advanced devices but I strongly do not recommend to do that. Really, this is bad idea.

 

[TxTimo]

Does anyone know how to add or activate ACC on a 2017 RR Sport HSE. ACC was very common by 2017 and I was upset to learn after purchase that it was not included as standard equipment on the HSE

 

[scapistron]

Just got ACC working in my 2015 LR4.

Bought a radar unit off eBay that had the metal bracket attached. Ordered brand new switch buttons from a dealer. Paid for a flash from GAP.

To mount the radar unit I popped it out of the metal bracket and attached it to the magnesium structure that holds the horn and grill using a couple rivnuts. This puts the radar unit behind the upper section of the bumper and above the front license plate. I used a couple M8 nuts to space it off the structure.

Adding the switches was a little intimidating, but not bad. Disconnect the batteries and walk away, no one wants to take an airbag to the face. Several hours later I used my homemade airbag removal tool,3/32 stick welding rod with a short hook on it, to remove the airbag. Slide the tool into the slots on each side of the steering wheel, pull the tip of the tool towards you, and pull hard towards the door. This releases a spring, it takes some effort. Remove a few t20s on the back of the wheel and remove the old switches and pop in the new. Reassemble. Airbag just pops back in.

Flash from GAP is straightforward.

Setting the CCF wasn't bad either.
Speed Control - adaptive speed control with queue assist
Speed control - adaptive speed control with stop and go
Adaptive Speed Control ECU - US North America...
Adaptive Speed Control ECU - blockage level -40db
Adaptive speed control in instrument cluster - enabled

Run the calibration for speed control in the GAP tool.

After about 10 miles of driving the yellow vehicle distance light will stop blinking and you're good to begin testing it out.