Understanding the Land Rover LR4 Brake Pad Wear Sensor

I show and explain the brake pad wear sensor that comes on a Land Rover LR4 (and other Land Rover models). The sensor has a copper loop embedded in the plastic that when worn through / broken, creates an open circuit triggering the warning light on the instrument cluster. If your amber brake light has come on, you've worn through and need to replace the sensor when you replace your pads. Keep in mind there are only sensors on the left sides, front and back.
Land Rover LR4 Brake Pad Wear Sensor:
Front Sensors:
Land Rover Genuine Replacement Front Sensor:
amzn.to/3yoXUOv
Aftermarket Replacement Front Sensor:
amzn.to/3kojGN6
Rear Sensors:
Land Rover Genuine Replacement Rear Sensor:
amzn.to/38lzIC6
Aftermarket Replacement Rear Sensor:
amzn.to/3mEGOKg

[@AkhonaNgquba]

Best video I have seen for this procedure. One sensor is enough because it is difficult to only buy half a set of brake pads (for only 1 wheel)

[@deej99]

Excellent video - I was wondering how the sensors worked. This has shown me that the preface is by physical wear, whereas I was expecting something like width of the disc calculations. A very primitive sensor indeed. The upside is that if you don't wear your pads below (say) 30% then you don't need to change your sensors. They are disposable but only after they've been worn down. I'll bet many mechanics charge for replacing sensors when they leave them in place and change the pads only!

[@Physics072]

Once the sensor comes on the wire circuit has be worn OPEN and needs to be replaced. How are you going to change pads before the sensor tells you? Take them off and guess? Then you are wasting money by changing pads too early.
They will start to chirp if you ignore the sensor and keep driving. Most cases you are replacing the rotors so to get the most out of the pads just drive till they grind and replace then pads/rotor/sensor.

[@SR-gz7to]

😮😮

[@rotorspin6127]

Brilliant video, thank you. Did this on my wife's LR4 and it sorted the warning message out, whoever had replaced the rear pads hadn't replaced the sensor too. 👍

[@Physics072]

So the wear sensor wears and breaks the wire which opens the circuit = dash light comes on. So if the wear sensor comes on is the sensor broken at that point? Seems it would come on and stay on but mine flickers and some times goes off. It just started so I have some time before its metal and metal. So its impossible to save the wear sensor once it comes on and must buy a new on for each break job. Is it two sensor for front and back? or just one front and one on rear?

[@ShinyFastLoud]

Yes, it comes on because the sensor is broken and by that point needs to be replaced when the brakes are replaced. There are only two on the vehicle....one in the front and one in the rear.

[@dominicmolina]

Hello. So I changed my brakes and sensor is not damaged. The light is still on after. Does it rest by itself or is their a processs. Thanks in advanced.

[@CristianZamora]

Is there a sensor on each wheel?

[@ShinyFastLoud]

There are only 2. One on the driver’s side front and one on the passenger side rear……at least on a North American model.

[@deej99]

Dude, you need to listen more - he was really clear that there is one on the back, one on the front

[@Physics072]

@@deej99 Dude you need to re listen more, He voice was garbled near the end when talking about sensor location.

[@Himoutdoors]

It doesn’t look like this on my 3.0TDV6 2010. Real PITA to Acess😊

[@thewiseguy7100]

Do I need to replace the sensor after replacing brake pads? Also would it reset itself or do I need a scanner to reset it?

[@ShinyFastLoud]

If it is not damaged you don’t have to replace it and you do not need a scanner to reset it.

[@amberstar203]

Literally the best video on the sensor! Thank you for actually showing the sensor placement! You are awesome!! Everyone else just said "between the pad & rotor" That was incorrect!

[@ShinyFastLoud]

Glad it helped

[@Paulinthewyld]

Thanks for this.
I took on the project without seeing this video and now that I’m done, and frustratingly so….. I find this!!!!
Great video, wish I had seen it before I took the project on.

[@ShinyFastLoud]

thank you.

[@Himoutdoors]

Thanks, very useful. Also worth stating that as your rotors wear, the tip of the rotor can cut through the sensor too. The pads may have plenty of meat left, but the top of the disc has a significant lip.

[@ShinyFastLoud]

Thanks for the info!

[@Himoutdoors]

@@ShinyFastLoud different wiring loom, maybe it’s because we have the TV / DVD. anyway all on now after some serious fiddling!

[@ShinyFastLoud]

@@Himoutdoors glad to hear

[@scottharkness2905]

Sensor on the same side uk which is our passenger side your driver.

[@ShinyFastLoud]

thank you for confirming

[@overland_west_bath]

Very useful video, thanks 👍

[@ShinyFastLoud]

Glad it was helpful!

[@teamnoble9715]

thank you. very clear

[@ShinyFastLoud]

You are welcome!

[@jarredallen2016]

How do you reset the brake light?

[@djr113]

Great video

[@ShinyFastLoud]

Glad you liked it

[@mauricioolmedo2709]

Thanks, great video!!!!!!!!!

[@ShinyFastLoud]

Glad you liked it!