I just got my VAG-COM and my brakes should be in later today. The repair manual doesn't look like it will be in today so I would need to know where to go to disengage the electronic parking brake, any help would be appreciate.

I just got my VAG-COM and my brakes should be in later today. The repair manual doesn't look like it will be in today so I would need to know where to go to disengage the electronic parking brake, any help would be appreciate.

First: put the MMI-(car-suspension) in Jack mode.

Use your software & interface as follows:

Select
53 - parking brake
basic settings - 04
Group 005
(GO!)
Activate basic setting
(on, off, next)
{you will hear the stepper motors opening the calipers}
(Done, go back)
(close controller, go back - 06)

perform the mechanical work as follows:

Remove bolts (hold guide pins with open end wrench).

Leave connectors connected (!) but slide connector assembly out of retainer clip move & secure caliper out of way and remove scrap pads.

Remove guide clips/retaing springs.

Clean brake dust on caliper with air or alcohol (Crown royal is better than Kessler*)

Insert new pad retaining springs. If your pads did not come with new ones, (some aftermarket ones don't) then I'd consider bending the old ones with needle nose pliers to put tension on the pads & carrier to prevent noise later on because you won't be buying new ones on a weekend!

Install pads.

Bolt the caliper together with new self locking bolts. If pads did not come with new ones; I guess you can add a dab of blue Loctite 243 to the old threads. I've done it many times.

Slide connector back into retainer clip.

You didn't ask, but now comes part two withthe Ross-Tech software:

(select)
53-parking brake
Adaptation-10
Channel 006
(read)
enter new pad thickness in MM (pad only, not backing plate) I used a caliper to measure mine.
(test)
(save)
(done, go back)
(close controller, go back - 06

Enjoy, once you reinstall the wheels and lower the car off jacks, you just saved about $200-250 in labor charges. Plus $3.00 for "shop supplies"!!!!

* Hey, I can joke around a little!

Torque for the self locking bolts is listed at 35 Nm. In layman's terms: two light grunts.

Thanks, I also found it in Wiki Ross-Tech, but I ran into another problem. I ordered some rear rotors and pads and they ended up being 280mm x 20mm in size. The seller says they fit my 2005 A8 4.2L but the part number is TRW 2806. I believe the factory is 310mm x 22m. Will the smaller ones fit with no problems? I am upset with the seller.

Thanks, I also found it in Wiki Ross-Tech, but I ran into another problem. I ordered some rear rotors and pads and they ended up being 280mm x 20mm in size. The seller says they fit my 2005 A8 4.2L but the part number is TRW 2806. I believe the factory is 310mm x 22m. Will the smaller ones fit with no problems? I am upset with the seller.


My OEM rotors on my 2004 A8L measure about 305mm (by sight) through my 19" "turbine" wheels. No way are they 280mm. All I can say is that the engineers who design any vehicle braking system put a lot of thought into the components they spec. If the bolt pattern and hub area matches, they will fit. The big question is will the entire brake pad area contact the disc? Will a disc that is 10% smaller dissipate built up heat adequately?

My OEM rotors on my 2004 A8L measure about 305mm (by sight) through my 19" "turbine" wheels. No way are they 280mm. All I can say is that the engineers who design any vehicle braking system put a lot of thought into the components they spec. If the bolt pattern and hub area matches, they will fit. The big question is will the entire brake pad area contact the disc? Will a disc that is 10% smaller dissipate built up heat adequately?

Thanks for the reply, it appears the pads and rotors are for the A4, I will be getting my money back! Midas wants $605 for the rear including replacing the rotors, but just to replace the pads they want $200. They also want $160 labor to install the rotors. Heck, once you take the calipers off, it looks like just the torx screw to remove the caliper.

Thanks for the reply, it appears the pads and rotors are for the A4, I will be getting my money back! Midas wants $605 for the rear including replacing the rotors, but just to replace the pads they want $200. They also want $160 labor to install the rotors. Heck, once you take the calipers off, it looks like just the torx screw to remove the caliper.

I think they call those internal twelve point bolt heads something other than Torx. I'm familiar with standard Torx (six point) and five point Torx (believe it or not, you can apply mort torque to the five point head before it busts apart than a six point.

I actually meant a torx screw to remove the rotor.