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Post by exoseven on Jan 10, 2022 18:00:49 GMT
Hi there! I bought an A4 B9 and I did some coding on the vehicle as high beam assist, lane assist with obd11 apps... Everything is working fine, but today i noticed that the dimmer knob on the dashboard is no longer working, no effect even by night with beams on.
This button was working before because i tried it when I get the car for the first time, so I'm suspecting a coding mistake.
I searched on the forum and found this topic with similar problem.
The solution to long code unit 09 (central electric) byte 17 bit 1 to 0 state is not working for me. I waited 15 min before switching on the car and re-test. So I reverse and put back the bit 1 to 1 state.
Is there a reboot or something i missed ?
Thank you for help
François
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pt16a4
Junior Member
Posts: 83
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Post by pt16a4 on Jan 12, 2022 11:45:59 GMT
You should try resetting the MMI, after coding. Press the Car/Nav, Radio buttons forward, while pressing the centre circular button in unison.
I do this after every coding, to ensure the changes are implemented.
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Post by exoseven on Jan 13, 2022 19:26:35 GMT
Hi
Thank you for reply! I tried to reset MMI with this procedure, it was unsucessfull.
Is there somewhere I can find which modules and associated bytes are related to the dashboard dimmer management ? I've done severals research on google but i didn't find anything in this way.
The car is A4 B9 2018 with virtual cockpit.
Thank you for help
François
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pt16a4
Junior Member
Posts: 83
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Post by pt16a4 on Jan 14, 2022 9:57:50 GMT
Check the "Manuals" section within your Obdeleven app, for the resetting process.
As for where to find info related to bytes and bits, unfortunately I can't help you - I don't believe any master lists exist for the A4 B9.
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Post by elcupra on Sept 23, 2023 21:37:13 GMT
I had same dead dash dimmer knob with A4 b9.
Returned with coding:
(09) Central Electrics
dim_poti_src
Old coding: dimm_value_from_bap
New: dimm_value_from_lin
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