Seat Ateca 2018 - Auxiliary Heater

Auxiliary Heater (Entertainment Bus):

521#0100000000000000 On
521#1A00000000000000 Off

These codes need some additional testing, but they seem to be working.


Did anyone figure out what bytes 2, 3, 4, 5, 6, 7, and 8 could represent?

Okay, I understand. Please provide the German text you want me to translate.
521#0100000000006A20 On
521#1A00000400FA6E28 Off

010
011
012
013
01A
01B
040
0FD
101
107
116
12B
147
155
157
184
1FA
29D
29E
29 years old, female.
2A7
2A9
30B
30C
30D
30 years old, female.
31B
31E
324
32A
32F
366 - Alarm Lights / All Blinkers - 366#0000103E80030000
386
391
394
395
397
3B5
3BE
3C0
3C7
3CE
3CF
3D0
3D1
3D4
3D5
3D6
3D8
3DA
3DC
3E5
3E9
3EA
3EB
462
463
464
481
484
485
486
48B
48E
48F
504
520
521 - Auxiliary Heater -> 521#xx00000000000000 01=On / 1A=Off
52A
530
551
569
582
583
584
585
588
58C
592
593
5A0
5AC
5BB
5BF
5E0
5E1
5E9
5EA
5EB
5F0
5F2
5F4
5F5
5F7
640
641
642
643
645
647
64A
64E
650
656
658
65A
65D
65E
661
663
668
66E
670
671
672
6A6
6AE
6B0
6B2
6B4
6B5
6B6
6B7
6B8
6B9

Did you see this:
https://github.com/commaai/opendbc/blob/master/vw_mqb_2010.dbc
Ateca is based on the MQB platform, so it should fit. I have converted the DBC file to an XLS format for easier viewing.

You're welcome! I'm glad to help. This upcoming weekend, I have a business trip to Essen, Germany, but after that, I will have more time... I can't wait!

Okay, here's the translation:

"Great! The details of the 521h seem to be correct." The temperature calculation using byte 7 also yields accurate cooling water temperatures.

My German isn't great: does the XLSX file contain ID and byte information about the J386/J387 Door Control Units (which are connected to the Convenience CAN-bus)?

I found these codes on this forum, but my car isn't responding to them.

// Front Left Glass Up
181#0200
// Front left window down.
181#0800
// Front Right Glass Up
181#2000
// Front right window down.
181#8000

This weekend, I'm going to try to reverse engineer the code that controls Windows. Will report back when found

Hi,

Just increase the size of the column header line in the sheet, and you will be able to see the English descriptions of the columns.

Best regards,
Rainer

Did you manage to enable the headlights on the MQB platform?

When I send the following codes (which I intercepted), the headlights flash once each time I send them. If I remove one of the two codes, nothing happens.

3C0#74000300
658#0070040000000200

It seems there's another module that's repeating other commands, causing my code to only make the headlights flash very briefly, like a camera flash (they are LED headlights).

Okay, I've tried to enable the headlights using the VCDS plug from RossTech, but I can't seem to find the option to enable the headlights through OBD. The idea was to extract the codes from the VCDS plug and use them to enable the headlights.

DatafoxChris wrote:

Hast du es geschafft, die Scheinwerfer auf der MQB-Plattform zu aktivieren? When I send the following codes (which I intercepted), the headlights flash once each time I send them. If I remove one of the two codes, nothing happens. 3C0#74000300 658#0070040000000200 It seems there's another module that's repeating other commands, causing my code to only make the headlights flash very briefly, like a camera flash (they are LED headlights). Okay, I've tried to enable the headlights using the VCDS plug from RossTech, but I can't seem to find the option to enable the headlights through OBD. The idea was to sniff the codes from the VCDS plug and use them to enable headlights.

In more advanced cars, such as the Passat B8 and Golf VII, the steering wheel ECU communicates with the Body Control Module (BCM) via the CAN bus. This allows you to control functions like turn signals and high beams. But you should maintain accurate timing, counters, and checksums.

To enable headlights using VCDS, you can try the following:
Go to the BCM module.
Output test;
Choose the light you need.
Press start.

Check the CAN bus, and you will see how easy it is to control this.
BUT! It only works with the ignition on.

P.S.: In output tests, you can find more interesting things, not just lights .

Daytime running lights can be deactivated using this output test.

I sniffed the bus traffic while running an output test and then filtered it.

The log is attached. Next step: interpret the commands

I would propose creating printouts of the "Message Changes View" in KCANMonitor and then overlaying the paper sheets on top of each other.
One sheet printed with "Auxiliary Heater: On" and one with "Auxiliary Heater: Off".

You should identify which bytes are different and be able to focus your work on those specific bytes.

Best regards,
Rainer

Thank you for your response: the heater can be controlled now . At the moment, I am trying to control the headlights when the car is parked and off.

DatafoxChris wrote:

Sniffed the bus while executing output test, and filtered it. The log is attached. Next step: interpret the commands

It's quite easy .
If I remember correctly...
0x700 - keep session alive.
0x70E - tested ID
0x778 - BCM ID.

Output control is working with command 0x2F.

Basically, you need to send periodic messages, open a diagnostic session, and control the output. Check the log files, analyze what each CAN message does, and you will understand how easy it is.
But as I said, it only works if the ignition is on.

You can find more information about message structure and related topics by searching on Google for "ISO14429". Or simply UDS diagnostics.

Sure, here's the translation:

"Brief information about commands:"
https://automotive.wiki/index.php/ISO_14229

"EKP Ansteuerung" bezieht sich auf die Steuerung oder Ansteuerung eines EKP-Systems. EKP steht für "Elektronische Kennzeichnung Präzisionsbauteile", also elektronische Kennzeichnung von Präzisionsbauteilen. Die Ansteuerung bezieht sich auf die Steuerung oder Programmierung des Systems, das diese Kennzeichnung vornimmt.

"What could be the meaning of EKP Ansteuerung please?"

"EKP Ansteuerung" refers to the control or operation of an EKP system. EKP stands for "Electronic Identification of Precision Components," which means electronic marking of precision components. "Ansteuerung" refers to the control or programming of the system that performs this marking.

EKP stands for European Central Bank.

AKP = Electric Fuel Pump?