There are sensors in the pads... and once the pads where to that point you will be notified in the MFI.

 

Greetings RJ,
My point was that the warning will occur w/perhaps 1/3 of the pad left.
laurence

 

Based on my measurements



Based on my measurements, the sensors go off when there is around 2.5mm lining left out of a 9.5mm depth front/11mm rear. The actual depth may vary, but you get the idea, it's a warning , not an emergency. However, you will start to notice thermal events and longer stopping distances, less pedal responsiveness, and that will make you question the wisdom of running your brakes into the ground, etc.

Hope that helps,

Geoff

 

See This Thread for similar discussion.

 

Oh. My bad. When my sensors fired.... my pads were pretty worn down and did need to be replaced.

 

Alright! Great to hear from the brake source.
I was thinking the light would come on as soon as the first wire touched the disc. From what you're saying the disc must eat down to the second wire? But Bentley talks about reusing the sensors.
Thanks again!
BTW: New pads are about how thick?

 

These sensors are the same ones used on almost all german cars, at least the part that is actually located in the pad material, however the wiring is different. You can use them again if they are not cut in half and (most importantly) if you can get them out of the old pads without breaking them! This is tricky and chances are you will break one or two of them.
Another point here is that if you don't have new sensors and you do break one you can cut the wires above the sensor twist them together and get the light to go out on the dash until you buy new sensors or if you decide you don't need sensors (if you check out your pad thickness yourself). The Touareg is one of the first German cars I have owned that has sensors at all 4 corners and the only one I have owned that had a sensor in each and every single pad (OVERKILL & COSTLY)!!!!

 

The sensors are not very expenseive. Not compared to the rest of the brake system

 

I managed to get Textar brakes front and rear for about 190.00 total by searching for Porsche Cayanne brakes. Once I got the brakes the box said for: VW, Audi and Porsche on it! Next go around I want to put cross drilled rotors on it! Then the hunt will be on for the best price for these.
The sensors are like 20 dollars each and yes they are not that expensive compared to the rest of the system but I am used to paying about 10.00 dollars for them for BMW's.

 

Don't get cross drilled rotors.

Putting the nomex on now....


You will have less thermal mass and cross drilled rotors are prone to cracking around the holes. The majority of cross drilled rotors on the market are designed for aesthetics anyway. Look closely at them and you will notice that the holes are not chamfered at the edges and will act like little razor blades further increasing pad wear. On top of that cross drilled rotors are not really needed for carbon metallic pads.

Ok, that being said if you want the look go for it . I've decided that the best brake parts for the car are the ones that came with it. Good find on the pads.

PS: If you search for a Pelican that sells porsche parts you can find some good prices on parts.

 

Cross drilled rotors are not recommended for the Treg and there has been numerous discussions as to the actual benefit of said rotors. Up to you to spend the money on them, but most have said no benefit to them on the Treg.

 

Well being such a believer in OEM pads (again the Textars I bought are an OEM supplier) I will listen to you guys and not go for the looks if it is going to hurt the performance or my wallet!!!
Has anyone seen the 18" Karthoum wheels on a Touareg???


What type of rotors do the Cayannes have on them???

 

I believe they have the same rotors that we are using. I like the Zimmerman Z-Coat rotors as they as coated so that the non friction surfaces won't rust.

 

I do not know anything about textar brakes, but you do not want to go cheap on brakes on a Touareg.
Crossdrilled rotors are not advised. They do not make you stop faster, are not for going off road and are more prone to crack.

The only argument would be looks may be

 

Jurid (Allied Signal/Honeywell), Textar, ATE (Alfred Teves/ Continental Teves), Ferrodo, Galfer (spelling?), Brembo, Pagid are all Euro OEM suppliers. I used to be the Manufacturng Engineer and I was responsible for the line that manufactured the brakes for the Mercedes ML series that is built in Alabama. The calibers on most German cars are ATE and they had us Honeywell/Jurid supply them with the pads. ATE also makes its own pads. You will notice that just because a company makes the Calibers, Master Cylinder and Rotors doesn't mean they are the only ones that make the pads. You will see a mixture of manufacturers on different vehicles depending on what compound the OEM engineer liked the best, or sometimes it can be awarded to a couple of companies. At one time we made 50% of the ML pads and Federal Mogal made the other 50% so the vehicle came with 2 different types of pads on it from the dealers lot, same caliber different pads, different compounds as the compound is owned by the pad manufacturer !

 

Those things are called callipers
Caliber is important if you are into hunting

 

Thanks! Yes I am a TERRIBLE speller! I even have a pocket dictionary on my desk because MS Word cannot figure what I am trying to spell sometimes!

I just finished mounting my new Sirius receiver on the dash storage pocket!!! I borrowed the radio tools from the local VW dealer to run some wires behind my 06 Nav system and well.... I tell you I was staring really hard at my wife's new 2010 JSW TDI Nav system wondering if she would notice if I swapped them!!!
She even opened the door and yelled at me........"Get away from my Jetta!!!"""