I picked up a new set of rear pads from the dealer to install today. They don't seem to match the old pads in how the sensor connects to the pad. The back of the pad is also a bit different. The removed inside pads (piston side) clip on to the piston. The new ones simply float against the piston. My sensor on the old pads slid into the slot. The new pads came with springs for the sensor which my sensor doesn't seem to connect to. What's up with this? The pictures show the old pads with the clipping mechanism on the back of the pad which clip on the piston and the top slot for the sensor is different.

 

I would assume the XKR and XKR-S have identical brakes. The part number of the rear pads on the invoice is C2D3792.

 

According to SNG Barrat you bought the XK ones but need the XKR-S ones. I'm guessing there's an option for 'with' and 'without' the sensor. Did the dealer lookup the part# via VIN? Or just year/model?



​​​​​​​

 

Yes, dealer ordered and rechecked by VIN.

 

I ordered a set of Akebono from Amazon by mistake which are for the XK and are considerably smaller than the XKR pads that I returned. These pads I picked up from the dealer and checked via VIN are the right size, but the attachment mechanism is different. Oops, I remember they were for an XKR pre 2010.

 

The new pads will fit the calipers perfectly but not fit your existing pad wear sensor, so you have several choices:
1. Forget all about trying to fit a pad wear sensor, they are problematic at the best of times and fairly useless anyway when you know you have just fitted new pads. Just leave the cable plugged in to the electrical socket up in the wheel well and zip tie the other end of cable up in the wheel well, that's what I did on all of my XFS, XFR and F-Type. You can't just remove the sensor cable altogether otherwise you will get a constant annoying "low brake pads" warning.
2. Instead of zip tying the cable cut it off a couple of inches from the electrical plug and solder/twist/tape/tie the two ends together. It's the breaking of this circuit which triggers the warning so you need to keep the circuit intact to avoid the warning.
3. Buy a new sensor cable with the correct pad end attachment, they are fairly cheap. To fit it you feed it through gap in the caliper and use pliers to open up the little spring, slip the connector into the spring, let it close again, then push it into the gap in the pad.
4. Buy different new pads with the old pad wear sensor attachment set up.

 

Thanks, OzXFR. I assume the sensors are for brake wear and have nothing to do with speed sensing. Rockauto has the groove push in sensor pads. The Jaguar price above is ridiculous, $600US for rear pads.

 

Yep, they are purely pad wear sensors used for nothing else.
And yes, $600 is sick joke!
Also based on the two pics posted by gkubrak there may be some confusion as to the correct rear pads for your car.
You almost certainly have the 380 mm front and 376 mm rear brakes, same as on my old XFR, but the top pic states "380 mm rear" when there is no such thing and the bottom pic is for the smaller 326 mm rear brakes as fitted to the cooking XK and not the XKR or XKR-S.
However it seems you now have the correct 376 mm rear pads.

 

I ordered 2 sets of rear pads from Rockauto with the proper top to receive my wear sensor. This must be the longest rear brake pad change on the forum, lol. I first order a set of Akebono for the wrong car (pre 2010 XKR). When I ordered the replacement pads from the dealer using my VIN I thought I would have no problems with getting the correct parts. They had 2 sets of pads to fit my car. The pads that were ordered, $200CDN and the other proper pads around $800CDN. They said it must e the $200 pads; they're being returned today. I understand they are the same except for the different sensor connection and the clip on piston connection on the inside, piston, pad. Although, they may have different friction material. I'm certainly not paying $800 for a set of rear pads. Should have this done in about 10 days and will slide a new AGM battery. When I put the new battery in I'll reset the battery setting to AGM using an Autel AP200--I hope that works.

 

I think I paid £170 inc for my ebc red front and rear and no issues with fitment to my 2014 XK Dynamic R

Fitted for free too

 

[QUOTE=DGL;2334828]I picked up a new set of rear pads from the dealer to install today. They don't seem to match the old pads in how the sensor connects to the pad. The back of the pad is also a bit different. The removed inside pads (piston side) clip on to the piston. The new ones simply float against the piston. My sensor on the old pads slid into the slot. The new pads came with springs for the sensor which my sensor doesn't seem to connect to. What's up with this? The pictures show the old pads with the clipping mechanism on the back of the pad which clip on the piston and the top slot for the sensor is different.


[. Hi I noticed your pads and those belong to xk with no sensor. They gave you the wrong pads [img]blob:https://www.jaguarforums.com/ddd3f41d-baff-465f-a6cb-428cc86826d5[/img]

 

I noticed the pads you have and those belong to xk with no sensor they gave you the wrong pads I have xk.

 

I noticed the pads you have and those belong to xk with no sensor they gave you the wrong pads I have xk [img]blob:https://www.jaguarforums.com/5c7ea458-bba1-46d3-b8f4-18227ec03ec7[/img]