Correct coding for B7 S4 Brakes?

**A4SF** · 03-29-2012 02:17 PM

I upgraded my front brakes with a set of B7 S4 calipers. Now I want to recode my ABS module to match the brakes. Does anyone know the correct coding?

0x?xx: Brakes
1 = C54 (PR-1LZ)
2 = FN3 15" (PR-1LB/1LE)
3 = HP2 16" (PR-1LX)
3 = FNR 16" (PR-1LA/1LG)
4 = FN3 16" (PR-1LT/1LF)
5 = Brembo 17" (PR-1LJ)

**Charles.waite** · 03-29-2012 02:19 PM

Coding 5

**A4SF** · 03-29-2012 02:26 PM

That's what I thought it was but I didn't think that S4 brakes were made by Brembo.

**Charles.waite** · 03-29-2012 02:41 PM

Originally Posted by A4SF

That's what I thought it was but I didn't think that S4 brakes were made by Brembo.

They aren't, but the PR code: 1LJ is the PR code for S4 brakes.

More Info:

5 = Brembo 17" (PR-1LJ) - B6/7 S4 brake package
4 = FN3 16" (PR-1LT/1LF) - 312mm 3.0 front brake package
3 = HP2 16" (PR-1LX) - 320mm B5 S4 brake package
3 = FNR 16" (PR-1LA/1LG) - 320mm B7 A4 brake package
2 = FN3 15" (PR-1LB/1LE) - 288mm B6 1.8t brake package
1 = C54 (PR-1LZ) - No idea. Whats shittier than the 1.8t brakes?

**A4SF** · 03-29-2012 02:45 PM

Thanks for the info!! I was looking around all morning for a table like the one you just posted, but couldn't find one.

**Charles.waite** · 03-29-2012 02:50 PM

Originally Posted by A4SF

Thanks for the info!! I was looking around all morning for a table like the one you just posted, but couldn't find one.

NP. I actually just posted it in the B7 section yesterday, not realizing they have a different ABS module.

**onceover** · 03-29-2012 02:55 PM

I didn't know this even had to be done. Ill have to code mine to 5 for my wilwoods

**Charles.waite** · 03-29-2012 02:57 PM

Originally Posted by onceover

I didn't know this even had to be done. Ill have to code mine to 5 for my wilwoods

I'm not sure it HAS to be done. Honestly, I'm not sure what it changes exactly, but it probably just changes the conditions/parameters in which ABS is ultimately triggered. It could also have something to do with brake proportioning, but I'm not sure. It could also change the pulse length for the ABS pulses since it seems the coding is tied to rotor size. Larger rotors probably have longer pulses than smaller rotors.

If you want to test it out, try leaving it stock and do a full ABS stop and measure the distance, then do the same with it coded to 5. I'd be interested in the result!

**vhstejskal** · 03-29-2012 03:16 PM

It's been tried but I'm not sure how successful anyone has been... I tried to recode my ABS module when I upgraded to the HP2s but could never get it to stick...

Cross Post to ABS Coding.
Clicky Click

**A4SF** · 03-29-2012 03:20 PM

I'll give it a try tonight and update with my results.

**DownhillA4** · 03-29-2012 03:28 PM

Didn't know this had to be done either, as I have B8 S4 345mm calipers/rotors on my B6 A4. Interested to hear what this would change.

**mexiricer** · 03-29-2012 03:37 PM

subscribed! Going for the B7 S4's on my B6 Avant in the near future. Hope all that are doing this have positive results with the up-coding

**Charles.waite** · 03-29-2012 03:49 PM

FYI in case its not PERFECTLY clear from the other thread:
The login number is different than the coding number, but you need to make sure you're logging in with the same settings as the coding you are wanting to recode to.

So, referencing this page: LINK

My current car is the 1.8t manual so my current coding is: 04275

If I upgrade to the B6/7 S4 brakes and I want to recode my ABS module, my login is: 09275

I would then change the coding to: 04575

I would then recalibrate the steering angle sensor (I've done this before and was successful using the login code but I'm not sure if that is required in this case, I would think it is). Then close the module. Turn the car off, remove the key to be safe, wait 30 seconds to a minute. Turn car back on and the coding should be accepted.

**A4SF** · 03-30-2012 08:55 AM

Originally Posted by Charles.waite

FYI in case its not PERFECTLY clear from the other thread:
The login number is different than the coding number, but you need to make sure you're logging in with the same settings as the coding you are wanting to recode to.

So, referencing this page: LINK

My current car is the 1.8t manual so my current coding is: 04275

If I upgrade to the B6/7 S4 brakes and I want to recode my ABS module, my login is: 09275

I would then change the coding to: 04575

I would then recalibrate the steering angle sensor (I've done this before and was successful using the login code but I'm not sure if that is required in this case, I would think it is). Then close the module. Turn the car off, remove the key to be safe, wait 30 seconds to a minute. Turn car back on and the coding should be accepted.

The coding didn't work for me. When I try to login with 09275 I get an error message that says "No response from controller". Then I have to turn the key to off for VCDS to work again. I am able to login with 09575, but when I try to change the coding it doesn't save it. The soft coding stays at 04275. I'm using a genuine ross tech cable. Any suggestions?

**vhstejskal** · 03-30-2012 09:23 AM

This is the same thing I had... Even if you run through the correct process the what you want the coding to be does not work. Curious if anyone has really re-coded it with a different brake configuration.

**Charles.waite** · 04-03-2013 08:08 AM

Bumping this as I believe I was mistaken. The proper code for the b6/7 s4 brake is most likely te code that says fnr, so option 3.

**Siggiepop** · 04-03-2013 08:20 AM

what does recoding it do? I have stoptechs if that matters

**Charles.waite** · 04-03-2013 08:30 AM

I suspect it has different abs algorithms based on the size of the brake rotors. But I'm not sure anyone knows definitively.

**Hansi** · 04-03-2013 10:22 AM

Where did people find info for this? I've upgraded to B6 S4 brakes but haven't done anything to the coding. Can someone confirm what this does?

**Charles.waite** · 04-03-2013 10:43 AM

Originally Posted by Hansi

Where did people find info for this? I've upgraded to B6 S4 brakes but haven't done anything to the coding. Can someone confirm what this does?

I'm going to give re-coding mine a shot today on my lunch break. I'm not expecting much success, but who knows...

**itsmatt33** · 04-03-2013 11:16 AM

Originally Posted by Hansi

Where did people find info for this? I've upgraded to B6 S4 brakes but haven't done anything to the coding. Can someone confirm what this does?

this

**NyteEscape** · 04-03-2013 01:35 PM

i've always assumed this needed to be done, just never figured out how exactly. very interested.

**nefkntym** · 04-03-2013 10:52 PM

I would leave the coding alone. I tried coding mine to Brembo awhile back since I have 17Z calipers, the system wants me to run an ABS test, which I have not been able to complete. As a result, ABS and traction control are non-functional till that stupid ABS test completes.

**p8nt** · 04-04-2013 04:42 AM

How did it go Charles?

**drjonez** · 04-04-2013 05:22 AM

I'll go out on a limb say that no one will be successful in recoding....but here's hoping!

**iamshayan** · 04-04-2013 05:41 AM

there is nothing i despise more than coding abs modules. best of luck to all of you.

**drjonez** · 04-04-2013 05:54 AM

Originally Posted by iamshayan

there is nothing i despise more than coding abs modules. best of luck to all of you.

Have you ever been able to change the brake coding?

**Charles.waite** · 04-04-2013 08:35 AM

I didn't get a chance to fuck with it, work got too busy. Maybe I'll get around to it today. As everyone else has said, I'm not getting my hopes up but I'll give it a shot.

**Ace** · 04-04-2013 02:54 PM

Had no idea about this so subscribed.

How do you do this ABS test?
Is it something only a dealer can do ?

**bermudakid** · 04-04-2013 06:21 PM

Originally Posted by DownhillA4

Didn't know this had to be done either, as I have B8 S4 345mm calipers/rotors on my B6 A4. Interested to hear what this would change.

+1, My B8 brakes make ABS go ape shit under 30 mph the few times I slammed on the brakes to see what they were capable of.

Subbed

**Matt Devo** · 04-05-2013 08:34 AM

different ABS modules can only accept specific codings; so not every module can accept all codings. For instance, FWD and AWD B6s use different ABS modules, each cannot be coded as the other. The same holds for the different brake types.

**D0N0VAN** · 04-07-2013 03:16 PM

Originally Posted by DownhillA4

Didn't know this had to be done either, as I have B8 S4 345mm calipers/rotors on my B6 A4. Interested to hear what this would change.

How did you get the B8 rotors to fit? did you have to use some sort of spacer to get the hat to seat properly? I got a set from ECS by mistake (ordered B7 S4) and could not figure out for the life of me why everything wasnt working.

**DownhillA4** · 04-07-2013 03:28 PM

Originally Posted by D0N0VAN

How did you get the B8 rotors to fit? did you have to use some sort of spacer to get the hat to seat properly? I got a set from ECS by mistake (ordered B7 S4) and could not figure out for the life of me why everything wasnt working.

B8 S4 rotors DO NOT work on our B6 platform car. You need B7 S4 rotors to work since the hat offset is the same between the B6/B7 platform.

**D0N0VAN** · 04-07-2013 03:30 PM

Just making sure, haha. I have the B7 S4 setup on now. Thanks for clarifying!

**georgio3gr** · 10-13-2013 04:02 PM

Maybe i am a bit late but here is the correct process by Ross-Tech... Follow the video instructions and you will be able to change the coding...

Also, link instructions...

http://wiki.ross-tech.com/wiki/index...ics_(Bosch_5.7)

Coding is supposed to change the ABS/ESP brakes blocking...

**NyteEscape** · 10-30-2013 02:40 PM

was anyone able to get what georgio3gr posted to work?

**Sundevil84** · 10-30-2013 04:14 PM

For what it is worth, My ABS unit was messed up and I bought a used one off ebay and recoded it with the video above. It works perfect and I have had no problems.

However, I coded it to standard b6 A4 brakes.

**CyberPMG** · 10-31-2013 06:26 AM

I've had my StopTech 332 BBK on my car for over 8 years and over 200k miles. Never recoded the ABS. Never had an issue. I've done track time, agressive country road driving, and panic stops with no problems. You don't have to worry about recoding the ABS.

**MikTip** · 10-31-2013 06:38 AM

I tried to "re-code" my ABS for my B7 A4 brakes IAW the video....no luck.

**Charles.waite** · 10-31-2013 08:15 AM

I'm with miktip and cyberpmg.

Added my b6s4 fronts and b7a4 rears and never bothered recoding. I have zero issues, even when I activate ABS. Brakes work 100%.

And given the overwhelming sentiment that recoding them doesn't work I'm not really going to waste my time messing with it.