Modified by waggin at 3:19 PM 3-12-2006

Modified by waggin at 3:19 PM 3-12-2006

Modified by waggin at 5:21 AM 12-14-2006

Michael

But as Michael already stated, the problem is most VW ABS systems refuse to do diagnostics above a certain speed, and many of them have no ABS functionality when a diagnostic session is running.

-Uwe-

Make sure your control module supports the function, put in the switch, wire it up and recode the ABS. Done.

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

Details?

-Uwe-

Quote, originally posted by Uwe »

Details?

1. Control Module Check & Coding

Ok, first let's check which ABS module you have...

Address 03: ABS Brakes
Controller: 1K0 907 379 Q
Component: ESP FRONT MK60 0102
Coding: 0021122

1K0 907 379 K and 1K0 907 379 Q are known for working, other may too.

The new coding with TPMS active is 0004738 (0021122-16384), you can code before putting in the new switch and wires.

So for all others, unset (disable) bit 14 (16384) in your coding, this means, substract 16384 from your original coding.

2. The Right Switch & Other Parts

Of course you need the new switch (decide yourself which one you need) and the connector for the switch.

8P0-927-121--5PR (10 EUR + VAT) = For cars without double DIN radio (Concert, Chorus, Aftermarket)
8P0-927-121-A-5PR (10 EUR + VAT) = For cars with double DIN radio (Symphony, RNS-E)
4D0-971-636-A (2 EUR + VAT)
000-979-009 = Repair wires (incl. pins) for the connector.

3. Let's Wire it Up!

E226 = TPMS Button
J104 = Brake Electronics Control Module (ABS)
J519 = Central Electronics Control Module

E226 Pin 1 = gr/bl (grey/blue) > T12c/12 (J519)
E226 Pin 3 = br (brown) > Ground
E226 Pin 4 = sw/gr (black/grey) > Terminal 15 (Fuse 6)
E226 Pin 6 = gr/gn (grey/green) > (J104)

The easiest way to grap the necessary signals without much work is to grab them from the ASR/ESP Button (E256)! This saves you alot of hassle and gives the same result.

E226 Pin 1 = gr/bl (grey/blue) = E256 Pin 1
E226 Pin 3 = br (brown) = E256 Pin 3

The ASR/ESP button takes terminal 15 from fuse 4 instead of fuse 6 but it's save to take that one from the ASR/ESP button too.

E226 Pin 4 = sw/gr (black/grey) = E256 Pin 4

So the only pin that needs real wiring is the one that goes to the ABS control module! Depending on which ABS and which transmission you have, decide where pin 6 needs to go for you:

MK70 = J104/Pin 7
MK60 (with Manual Transmission or 02E/DSG) = J104/Pin 27
MK60 (with Auto. Transmission 09G) = J104/Pin 41

After connecting the button, check if it's working or not, you should use VAG-COM and ABS Meas. Block 018 Field 1.

4. How it Works

First off, the new button only resets the TPMS learned values, after that it needs some some driving distance to relearn these values! The learned values are adpapted in several steps (speed ranges), each step (range) is devided into 2 thresholds in 2 stages (powered and rolling), you can check this using VAG-COM and read meas. block 031 in your ABS control module.

Quote, originally posted by VAG-COM Labelfile »

031,0,Tire Pressure Monitoring (TPMS) IV ; 0 = Nothing Learned ; 1 = Only 1st Threshold powered ; 2 = Only 2nd Threshold powered ; 3 = Only 1st Threshold rolling ; 4 = Only 2nd Threshold rolling ; 5 = 1st Threshold powered and rolling ; 6 = 1st Threshold powered and 2nd Threshold rolling ; 7 = 2nd Threshold powered and 1st Threshold rolling ; 8 = 2nd Threshold powered and rolling (Optimal) 031,1,Speed Ranges I ; 5?xxx = Speed Range 1 ( 15 - 70 km/h) ; 5x?xx = Speed Range 2 ( 70 - 100 km/h) ; 5xx?x = Speed Range 3 (100 - 130 km/h) ; 5xxx? = Speed Range 4 (130 - 160 km/h) 031,2,Speed Ranges II ; 5?xxx = Speed Range 5 (160 - 190 km/h) ; 5x?xx = Speed Range 6 (190 - 220 km/h) ; 5xx?x = Speed Range 7 (220 - 250 km/h) 031,3,Curve/Wheel,Recognition ; 5?x00 = Curve Recognition (0 = No Curve / 1 = Left or Right Curve learned / 2 = Complete Curve learned) ; 5x?00 = Wheel Recognition (0 = inactive / 1 = activ)

Optimal would be:

031 Field 1 = 58888
031 Field 2 = 58880
031 Field 3 = 52100

Since in the US I doubt that you will run more than 130 km/h, you don't need to worry about the ranges above.

P.S.: Since this write-up is only about the major facts, you should read this (German) one made by Andy Grander (Andy7) back then when we figured how to do this on a Golf 5, so the wiring instructions should not be taked from that document - take the ones above!

http://team-dezent.at/homepage...V.pdf

P.P.S. @Uwe: I suppose you know a skilled upcoming german engineer who will do that for you if requested...

Modified by Theresias at 11:45 AM 3-8-2006

Modified by Theresias at 4:08 PM 3-22-2006

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

Yes, the next time you're here, we'll definitly do this..

-Uwe-

Michael

Once all of this is wired where does the indicator show up to tell you you have a flat or low tire?

Does the MKIV have a simular switch for its dash?

Modified by Occams_Razor at 5:20 PM 3-9-2006

Quote, originally posted by Occams_Razor »

Okay! Once all of this is wired where does the indicator show up to tell you you have a flat or low tire?

I was curious myself, but found it on the speedometer gauge of my A3 instrument cluster. It's hiding behind the speedo needle when stationary.
Shine a flashlight into your cluster to find it.
THe symbol is not shown in our US A3 Owner's Manual.

I have a MKIV Jetta.

My A3 2.0T DSG shows:

Address 03: ABS Brakes

Part No: 1K0 614 517 R
Component: ESP FRONT MK60-AT 0103
Coding: 0053890

There currently is no label file for that part number.
I have done the pre-labels for adaptation and meas. blocks from Controller Channels Map app and they look similar, but not exactly the same as 1K0 907 379 label file.

Can I base a test file off of the 1K0907379 label file?
Also, is soft coding similar to 1K0907379?

Thanks,

Jim

As mentioned, the symbol is shown in instrument cluster - this is a MK5 (Golf/Jetta 5 and Audi A3) feature, not Golf/Jetta 4!

Quote, originally posted by bassbiker »

Address 03: ABS Brakes Part No: 1K0 614 517 R Component: ESP FRONT MK60-AT 0103 Coding: 0053890

So you already have the new ABS modules, grats!

Side note: The above pin out is not verfied for this type of modules!

Quote, originally posted by bassbiker »

There currently is no label file for that part number.

Wasn't aware that these are already in the US, so there is a german file, which will be translates ASAP.

Quote, originally posted by bassbiker »

I have done the pre-labels for adaptation and meas. blocks from Controller Channels Map app and they look similar, but not exactly the same as 1K0 907 379 label file.

Please feel free to send them to me via email!

Quote, originally posted by bassbiker »

Can I base a test file off of the 1K0907379 label file? Also, is soft coding similar to 1K0907379?

It's quite different, so this is why we already use a seperate german file, not sure about the coding right now, need to look at that again.

*edit*

Coding for the new modules is the same as above, pin out looks like it's the same too.

Modified by Theresias at 4:00 PM 3-10-2006

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

I'm hoping to order the necessary parts soon and if I can't figure out the wiring, hopefully I can find someone that can help.

Thanks,

Jim

Since I only ordered my A3 on 3/8 and VAG-COM on 3/9, it'll be a few months before I get a chance to try it.

Are we sure the symbol on the instument panel is backed by an actual LED and software accept the CAN bus command to light it? Is there an output test that will turn it on to see?

I assume, since the button is a reset, that you want to make sure all your tires are at the correct pressure before pressing it, so the system adapts to them. Maybe I'll just leave the SmarTire system in the Volvo when I trade it in

Also, here's a good test of various TPMS systems:
http://www-nrd.nhtsa.dot.gov/v...s.pdf
A few disadvantages about wheel-speed-based TPMS from the article:

􀂃 The (system) cannot alert you to severe and sudden tire damage caused by external factors
􀂃 The (system) will not identify the natural, even loss of pressure in all four tires
􀂃 Under certain circumstances, there may be false warnings or a delayed detection of losses in pressure when driving on snow-covered or slippery road surfaces A sporty driving style (slip at the wheels receiving the torque, high lateral acceleration) can lead to delayed (system) warnings

Still, it's better than nothing, and, if all it needs is some wires and coding, it's cheap.. (Assuming you have VAG-COM access

Modified by waggin at 10:31 PM 3/10/2006

Supposed to be a beautiful day tomorrow, so after a round or two o' golf, I should find some time to run the output test on the instrument cluster

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

Yep, it lights up yellow while either doing the instrument cluster output test or after recoding the ABS module by subtracting 16384 from original softcoding.

I have done the recoding and now when turning on the ignition, the tire symbol briefly lights up with the other instru cluster symbols.

Thanks... This will be my first mod.. It's not the best ABS system, but it's a lot cheaper than the sensor-based options. Who knows, I still may install the SmarTire system during my first tire change.. Might be interesting to compare the results of the two on the road..

The wire repair kit mentioned above. Does it include pins that are compatible with the ABS controller connector?
Ideally, all I'd have to do is crimp the pin onto the wire, open the connector housing, and click it into the empty pin 27 hole..
(Then the hard part, cleanly and invisibly routing the wire back to the dash area..)

Does anyone know if the system provides any indication to the driver that it's successfully adapted after a reset, and is ready to proovide alerts?

Also, there's one thing this system won't do: When I was having new tires balanced on-car, my SmarTire receiver alerted.. There was a bead leak on the tire they were balancing, and it let us know before the tires touched the ground..

Forgot that part number, but will post it tomorrow.

Quote, originally posted by waggin »

Does anyone know if the system provides any indication to the driver that it's successfully adapted after a reset, and is ready to proovide alerts?

Nope, doesn't since the adaptation is a process which will not reach a real "end".

Quote, originally posted by waggin »

Also, there's one thing this system won't do...

Sure?

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

BTW: What is this item for:
Byte 01 Bit 7 Tire Pressure Monitoring (Address 65)
in the CAN Gateway. Is this related to this system, or a different one?

1= 58850
2= 50000
3= 50100

Where before, they all showed 50000 (no values learned)
I understand I will still need the reset switch, but it looks like learning process is intiated immediately upon activating TPMS setup.

The address 65 is for the direct TPMS method control module, I believe.
A3 would not use that.

No, it's only related to those models with a seperate TPMS control module, like the passat uses it.

Quote, originally posted by bassbiker »

I can tell you since changing the coding, I now have learned values showing in meas. block 31 1= 58850 2= 50000 3= 50100 Where before, they all showed 50000 (no values learned) I understand I will still need the reset switch, but it looks like learning process is intiated immediately upon activating TPMS setup.

Cool, thanks for checking!

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

Thanks. Now, wait for the numbers to stabilize, and then let about 6 PSI out of one tire, and drive for a few miles at low speed on a cool day. See if it generates an alert..
Also, you could just install a switch under the hood, near the ABS module. I imagine that the reset switch must be normally open, since it's adapting now, and would probably be in a constant reset state if it were a NC switch..
You could just forget the switch, and use VAG-COM to do the resets when needed.
(I have my V-C already, now I have to wait 2 months for the car

And, Will US dealers be able to order a switch that doesn't officially exist, or is the same one used in other US models?

If you get any flack from the US Dealers because they can't find the switch in US inventory send Chad an email at Chadkendrick20000@yahoo.com.

He can get any factory part, (shippable via USPS that is), as he is in Germany with the US Air Force and lives right down the street from a VW/Audi dealer.

He has been provisioning the guys over at TDI Club for ages.

OK, so does this mean the A3 can also use the pressure-based system, or is the gateway also used in other models that do?
It would be nice (and more expensive) if the A3 could use this system:
http://webpages.charter.net/dwarner2/audiTPMS.pdf
since this system provides warnings even if all tires lose the same amount of pressure.

http://www-nrd.nhtsa.dot.gov/v...s.pdf

I guess I'll give it a test. once I detemine that it will detect one low tire, I can drop the pressure on two on the same side and see if it can pick that up too.. (Adapt to higher than normal pressure first, to avoid having to run with extremely-low pressure)

The pressure based system is available in 2 versions, with one antenna for all sensors and with seperate antennas for every sensor. The system with one antenna is the one from the passat, the electronics are included in the comfort control module, so not easy to retrofit - but I've seen rumors that such system would come for the MK5 based models too, actually the control modules are already available for the Golf/Jetta.

Modified by Theresias at 2:02 PM 3-17-2006

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

Also, about the operation of the system:

Do you have to press and hold the reset for some time for it to work?
If so, does a short press do anything?

In addition to the tire symbol, are there any additional warnings, such as a sound, or text in the center display?

Yes, until the signal flashes in the instrument cluster, together with a chime.

Quote, originally posted by waggin »

If so, does a short press do anything?

No, should not do anything.

Quote, originally posted by waggin »

In addition to the tire symbol, are there any additional warnings, such as a sound, or text in the center display?

Should be a chime too.

Current VAG-COM/VCDS Version: 908.1
Current VAG-COM/VCDS Beta Version: ---

Männer haben Garagen, Frauen haben PAX.

OK...just did they experiment...let out 7PSI down from 35 in left rear.
Drove around at a normal commute pace and about 10 minutes into the drive, the buzzer comes on briefly and the "low tire" icon in the dash is now steadily on.

Immediately filled up the left rear back to 35, and tire icon is still lit.
Looks like I'm prolly gonna have to recode to deactivate then reactivate, until I get the actual switch setup.
Very cool feature, though. I like it and would think fellow new A3 owners would like it too.

If it hasn't been done already by the time I get my A3, I'll document the mods with photos and text. Unfortunately, I don't have the space to host them permanently.

Next: Order the switch (if possible). Alternately, I can just install a hidden switch in the ash tray area. I assume the light has no purpose other than to show where the switch is in the dark, so it can be left out.

Does anyone have an electrical diagram that shows the TPMS switch? If so, can you please post the part of the page that shows the switch conenctions?

I'm including the US version below, to show the ASR/ESP connections.

Modified by waggin at 6:51 PM 3-19-2006

I have a request in for the switch. When I get it, I'll document/host the instructions on my A3 blog (link in my sig) like I've done for some other things.

Waiting for our parts connection to get back to us....

Get FireVortex

If the part is like I think it is, it's several pieces of wire with male pins attached to one end and females on the other. You can cut a piece in half, use whichever pin you need and splice it onto a longer piece of wire if necessary.

So, unless there is a way in VAGCOM to reset the learned values back to 50000's, you will definitely need the physical reset switch.