Hi All,

My colleague is looking to buy a very nice 14MY SDV8 Vogue. It has everything he is looking for except the adaptive/radar cruise control. Car still has 15months LR Warranty and he is getting it almost at trade price so he doesnt want to miss out. I know this feature can be retrofitted to L322 but can it be retrofitted to L405?

Thanks,

Memzy 2017 Range Rover SDV6 AB
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Microcat shows that all engine versions of the L405 only require the radar unit (LR043725 unless superseded) whereas petrol-engined L322s use a 2nd radar unit and an ACC ecu. A radar mounting bracket (LR033405) would be required as would the ACC version of the RH steering wheel switch (LR037452) then the CCF edited to change to CC to ACC with stop/go. The radar unit then has to be set to calibrate mode so perhaps a LR dealer can do that or if the IIDtool doesn't yet support L405 ACC calibration then ask GAP if they will do it, as was done for my retro-fitting to my L322.

Microcat doesn't show the additional link harness between the radar unit and the main harness that is required for the L322 but the L405 radar unit has a different part number anyway, but does show a tail from the main harness terminating behind the centre of the bumper right where the radar unit is mounted.

Edit: The engine bay fuse for the radar unit had been omitted from my L322 at assembly.

Another edit: The switch part number is now LR087486.

Resurrecting this thread b/c I'm the proud new owner of a 2016 Supercharged V8 and the adaptive cruise control is the only option missing that I'd love to retrofit.

GraemeS – Am I reading your post correctly that for the L405 models, just installing the radar unit and steering wheel switches is all that's required? Or is there a software update required as well?

Yes, that's my conclusion from studying the late 2012 version of Microcat which includes the MY13 L405.

Really want to try this so did some more digging. If I ordered and installed the parts, could an independent LR mechanic access / edit the necessary CCF file(s) to enable ACC and do the calibration or does that have to be done at the dealer? 2021 P525 | Eiger Gray

I’m interested in this one too. Guess we just need to know what parts to order, costs and installation requirements 2017 Range Rover Vogue V6 Diesel
2006 Range Rover Vogue V8 Diesel - gone

Jase71 wrote:

I’m interested in this one too. Guess we just need to know what parts to order, costs and installation requirements

Are there any independents that could do the adaptive retrofit on an L405 in the UK? 2017 Range Rover Vogue V6 Diesel
2006 Range Rover Vogue V8 Diesel - gone

Update on this: I was able to successfully retrofit this to my '16 L405 SC. Start to finish, a pretty simple 2 hour job.

I purchased the parts I listed above and followed this video from PowerfulUK on removing the front bumper. Then thanks to this Range Rover Sport thread, followed the details for using the GAP IIDtool to edit the CCF to enable the system and calibrate the sensor.

Now I have adaptive cruise, queue assist, and forward collision alert. The system works brilliantly. Love it! 2021 P525 | Eiger Gray

Hi. Was The wiring harness in place from the factory ? Thanks.

725browning – yes, the wiring harness and cutout in the frame were already there from the factory. 2021 P525 | Eiger Gray

Thanks. I have a 2017 sdv8 vse that I have not managed to sell and I am considering keeping it and have a play. It's a high spec for a vse but lacks the adaptive and If I keep it I would try and get the front and rear light upgrade. I might try and source the parts and see if I can find an independent to install the adaptive.

Summary for anyone who finds this thread later:

Was able to successfully do this retrofit on my 2016 SCV8 L405. The whole process only took about two hours start to finish and the system works flawlessly.

The parts list is pretty short, but can be pricey. The links below are for new / genuine parts, but others have had luck finding used and cheaper on eBay:

LR062658 - Radar / Distance Sensor Unit
LR060076 - Radar mounting bracket
RYG500160 - Screws for mounting bracket
LR087486 - Steering Wheel Switch Pack

1. Remove front bumper to install the radar module (following this video from Simon at PowerfulUK)
2. Install the switch pack on the steering wheel (following this video from Simon at PowerfulUK

Speed Control: Adaptive speed control is fitted
Adaptive Speed Control ECU: North America, Canada, Mexico, Australia
Adaptive Speed Control ECU: Standard blockage level -40dB
Collision Mitigation By Braking: Fitted
Standard Speed Control Display Type: Adaptive speed control full display plus priority messages
Speed Control: Adaptive speed control with queue assist
Adaptive Cruise Control Indication In Instrument Cluster: Enabled
Speed Control: Adaptive speed control, stop and go
Collision Mitigation By Braking: Collision mitigation by braking GEN 3
Forward Collision Warning: Forward collision warning GEN 3
Front Crash Sensing System: Front crash sensing system - Upfront sensor

This is super useful info!

I have connected the new radar today and updated CCF exactly as per instructions described above. I haven’t started the car yet (new steering wheel buttons not installed yet ), however, I am seeing on the dash “parking brake fault” and “cruise control not available” messages. The latter message was expected since I haven’t run the calibration, but the brake related message is somewhat unexpected. did you see something like that during your installation?
On the positive side, the adaptive cruise control calibration option has appeared in the software after CCF updates and also the adaptive cruise dash signs light up when ignition is in position 2.
Also, a comment/question on CCF changes.
There were two parameters that appear to be related to ACC, If judged by name, but were not listed in the instructions above:
-Adaptive speed control ECU: disable (current value)
-Forward collision warning: not supported ( current value)

I haven’t updated these two, but wondering if I need to??? The first one can have value enable and the second one fitted.

The parameters that I did update exactly matched the Above listing of 11settings.
Speed Control: Adaptive speed control is fitted
Adaptive Speed Control ECU: North America, Canada, Mexico, Australia (already had this value)
Adaptive Speed Control ECU: Standard blockage level -40dB (already had this value)
Collision Mitigation By Braking: Fitted
Standard Speed Control Display Type: Adaptive speed control full display plus priority messages
Speed Control: Adaptive speed control with queue assist
Adaptive Cruise Control Indication In Instrument Cluster: Enabled
Speed Control: Adaptive speed control, stop and go
Collision Mitigation By Braking: Collision mitigation by braking GEN 3
Forward Collision Warning: Forward collision warning GEN 3
Front Crash Sensing System: Front crash sensing system - Upfront sensor

If you happen to connect diagnostic software to your car, could check:
“Adaptive Speed Control ECU” do you see 2 or 3 parameters with this name and what are the values in CCF?
“Forward collision warning” (see attachment) do you see 1 or 2 parameters with this exact name and what are the values?

Ans

Patrick Meilleur of GAP can walk you thru to fix it. Retrofitting it requires an ECU flash that gap charges 35 bucks for and it enables our car to accept the changes.

You need the ACC module camera the LDW switch button on lower dash and the correct rear view mirror. Plus the gap tool.

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