Our 17 F-Pace S has this very annoying feature. I followed the instructions, took a couple hours but I didn't care, works perfectly. I TyWrapped a baggie around the plug and will reinstall when I sell/trade her in. No negative effect at all, don't know about a dealer check during service, we will see. So much better driving experience with this permanently disabled. Shame EPA/CARB pushes this extra crap to save a cup of gas a year. Stupid!

 

Thank you for this post, I will attempt to disable mine.

 

Hello All,
New FP owner and 1st tim poster here. I love the car but hate the Auto Start function and really want to disable it.

I was able to get access to the VQM module in the back but my plugs are different than what has been shown or described. It looks like all if the wires are combined on 1 plug rather than being separated. Has anyone experienced this? Or am I missing something?

 

I've seen on youtube videos of disabling the auto/start by unplugging the attachment that is connected on the side of the negative battery terminal. Would this work as well for the F-pace? The video was for e-pace so I'm assuming it's pretty much the same.

I just had to replace my alternator because something happened and it started to fail charging my battery. Luckily my car was still under warranty but I'm thinking it may had something to do with constantly hitting that start/stop button to turn it off and something short circuited the alternator?

 

unplug that last one and plug back in the larger two.

 

I was wondering why mine doesn't Stop/Start.

Added to the HOW TO sticky thread with a 'thanks' to you.
https://www.jaguarforums.com/forum/f...mation-163949/ Section 2.

Graham

 

Apparently this is the procedure for the '21 MY vehicles.

 

I came across this thread and I must scratch my head over it. On my 2017 F-pace you can turn off this feature in the computer menu. Maybe not available on all models?

 

That's way too much trouble for some folks! File under first world problems.
Seems the '21 model procedure may have knock on consequences.
I actually quite like it but it is a much clunkier system than some others.

 

Is yours a 2.0 - 4 cylinder? I think the Auto S/S is enabled only on 6 cylinder & higher for fuel economy. I' have a 2018 2.0 XF 25T, I can turn it OFF & ON by pressing the Eco Button. Once the Eco Button is turned OFF, it is turned OFF all the time.
I think it is because of this why a lot of vehicles have the Auto S/S enabled.
https://bestride.com/news/technology/auto-start-stop

 

Yes, mine is an R-Sport with V6.

 

As is ours. We have the on/off button on the console.

 

Hello Folks,

I did this mod (unplugged the feed to the capacitor module) on my 2018 F-Pace. Works as the OP described.

However, be aware, by doing this a fault code is set as the capacitor module is a node on the network (Canbus). It does not set any fault lights but it will set/store a canbus fault and a body fault in memory. It takes a deep scan to see it, something the dealer can/will obviously do. When I did a deep scan I found both a U-code and a B-code

U-0447-00 - Invalid data received from Gateway A, No sub type information
B-12CD-87 - Voltage quality module (VQM) - missing message

When I brought my car in for its last warranty service I went back in plugged the feed back to the module, then used a global erase on my deep scan tool. This way, the dealer saw no error when servicing the car under warranty. Afterwards, I reversed it again and unplugged the capacitor module. These codes continue to reside in memory but do not impact anything else so no other lights/faults.

BTW - If you bring the car in under warranty and this module is unplugged, the dealer tech is going to discover it and attempt to repair it under warranty, but will realize the module has been unplugged. Then it is a matter of how an individual dealership will deal with it....maybe just plug it back in.

 

That's rather interesting, because on our 2016 XJ-L, it was the dealer that showed us how to defeat this "feature", on the day we picked up the car. It's been disconnected for 6 years, now, with no issues.

 

A couple of things - On the 2016 maybe 17 MYs too (I believe), an aux small battery was used to do the restarts. On the 2018 MYs they switched to a capacitor start and no small battery. I think when it was a simple aux battery circuit that might not have been on the network; or, it was (is) and the errors are stored but not impacting anything.

On the capacitor, with the codes present, there is no indication, no dash lights, etc., indicating they're there, just a deep scan shows them.

Whether it is an issue to the dealer and/or the manufacturer that it is bypassed, I guess, is an individual thing. I also have a MB AMG GT. When I talked to my dealer about it they said if it is disconnected the mfgr would deny warranty to anything associated with the disconnect which could potentially be half the network. With the Jag, I didn't bother to ask as it is just as easy for me to go back/forth with the disconnect.

Best,

 

I had the same thing but couldn’t unplug this small one. It’s super tight against a cluster of other wires. Anyone have the same issue ?

 

There is no comfortable way to unplug the connector with the module in place. It is not really hard to just remove the two fasteners (takes a 10mm socket), pull the module away from the mounting studs, unplug the connector, then replace. I also tie wrap the now loose cable to the other cable so it is not knocking around behind the panel.

 

wow ok, this is becoming quite the project. I just keep telling myself it will be worth that annoying start/stop being out of my life once and for all lol

 

Interestingly, the way Jaguar implements this feature is backwards compared to my Mercedes.

In the F-pace, when the car is started the stop/start button is not illuminated, then when pushed becomes lighted to indicate OFF. I ALWAYS forget to hit that unlit button when I start up making it very frustrating.

In my Mercedes the feature works the opposite way. When I start up the button lights, then when pushed to shut it off, the light is extinguished. Here I always see the green light and always remember to push it.

So, disconnecting the feature in the F-Pace is well worth the effort.