My 2020 Defender SE P400 is currently undergoing the Lucky 8 caliper swap.

the installer called today to say something is really wrong.

1. Check engine light is on after the install. Apparently Lucky 8 says the brakes need to be bled very thoroughly.

2. I checked the Land Rover app. It is indicating an emissions related fault, which I am attaching here. Why?

Should I be worried? These are the vehicles brakes we are talking about here….

Anyone else have this experience? Advice?

 

I cannot see how an emissions fault has anything to do with changing brake calipers. Your mechanic should know that. You might want to get the fault checked out by LR before you blame Lucky 8.

 

Agree with @Hovdebo . Likely entirely coincidental. The Defenders are having so many technical glitches that it’s likely related to an update. Or your installer accidentally did something away from the brake system.

 

I saw this same warning a couple days after I brought mine home from the dealer. Think it had around 200 miles on it. Funny thing is that the mileage to next service didn't match when I did the math. I also saw someone in the all new defenders facebook group a while back with the exact same message that had the exact same mileage due in value: 19883 miles. And their mileage didn't match the warning either. The check engine light in the vehicle never came on, I only had the warning show up in the app. It went away the next day and I have never seen it again 6 months later. Is the check engine light on in your vehicle or just the app?

 

Update: SOLVED.

I spoke with the installer. The P400 has additional brake sensors compared to the P300. The process to install this caliper mod involves using LR Diagnostic tool to tell the vehicle that new calipers and brakes have been installed, and then resetting system with battery unplug procedure.

When they followed this new procedure, all faults cleared.

I will keep this thread posted with further information when I begin driving and testing, but it should be noted that as of now, the Lucky 8 mod works! They should be supported in doing the lord’s work of helping us modify this vehicle.

 

@Aria Miran I'm running into the same issue with my installer. Have any faults re-appeared? Were there any specifics of what was done that I can share with them? They are saying I need to take it to the dealer at this point.

 

Hmm... I'm suddenly thinking I'll just fit KO2's on the stock 20's and call it good.

 

Are you located in California?

CARRS4X4, Inc - Land Rover Specialist
(714) 330-0873
https://goo.gl/maps/g2GoScKF2iJXSuAk6

This is the shop that resolved it for me. You should give them a call! Good luck.

 

Yes, but San Francisco area. Thank you!

 

We are testing it out for you!