Seat Ateca Auxiliary Heater 2018

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 would like me to translate into English.
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-year-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

"Hast du das gesehen?"
https://github.com/commaai/opendbc/blob/master/vw_mqb_2010.dbc
Ateca is based on the MQB platform, so it should fit. I have translated the DBC file to an Excel (.xls) format for easier viewing.

Thank you so much! I am going to take a dive into this. This upcoming weekend I have a business trip to Germany, Essen, but after that I will have more time... can't wait!

Great! The details of the 521h seem to be working correctly. The byte 7 temperature calculation also results in correct cooling water temperatures.

My German isn't great, but 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 am going to try to sniff the codes for controlling the windows. I will report back when I find something .

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 enabling the headlights using the VCDS plug from RossTech, but I can't seem to find the option to enable them through OBD. The idea was to capture 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, so I have 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 sophisticated cars, such as the Passat B8 or Golf VII, the steering wheel ECU communicates with the Body Control Module (BCM) via CAN. This allows you to control functions like turn signals and high beams. However, it's crucial to maintain the correct 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.

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

Daytime running lights can be deactivated using this output test.

Sniffed the bus traffic during an output test and filtered it.

Log is attached. Next step: interpret the commands .

I would suggest creating printouts of the "Message Changes View" in KCANMonitor and overlaying the paper sheets.
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. 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'll 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 diagnostic."

Short info about commands:
https://automotive.wiki/index.php/ISO_14229

EKP Ansteuerung könnte sich auf die Steuerung oder den Betrieb eines EKP-Systems beziehen. EKP steht wahrscheinlich für "Elektronische Kennzeichnung Prüfgerät", also ein Gerät zur elektronischen Kennzeichnung und Prüfung.

EKP stands for European Central Bank.

AKP = Electric Fuel Pump?