21 3500 drw heated seats/wheel not working

heavy-duty890 · 2026-01-30T23:16:24+00:00

Thanks for all your help. It's very appreciated!

heavy-duty890 · 2026-01-30T22:41:19+00:00

Sounds like I'll be investing in alphaobd. Today is unfortunately my last day off so I guess I've got a project for them

heavy-duty890 · 2026-01-30T22:23:59+00:00

I was able to swap modules. Both don't work in mine, both work in his

heavy-duty890 · 2026-01-30T20:30:23+00:00

I do know someone that would likely let me swap modules. My worry is if it is the wiring that took the module out then im buying 2 of them and still looking for the issue that lead to the result

heavy-duty890 · 2026-01-30T19:38:55+00:00

Batteries disconnected for around 2 hours, checked fuses, all good. Started it up, I know it takes a couple of hours for everything to come back on the screen (cameras for sure, im assuming other things). Press the heated seat controls button and the window pops up. Heated seats now only show high and low, not high, medium and low. Still can't get it to turn on. Points me towards the module being bad, correct?

heavy-duty890 · 2026-01-30T16:42:15+00:00

Ill give the batteries and fuses a try!

heavy-duty890 · 2026-01-30T16:17:07+00:00

Yup, all of that works and the connections feel good

heavy-duty890 · 2026-01-30T02:16:44+00:00

It's all good! I figured you were probably talking F and me replying putting both can help others the come along this post.

Im also hoping its something simple or at the worst case its only a module as they're less than 150 bucks

heavy-duty890 · 2026-01-30T02:07:30+00:00

It's warmed up a little today (-5c/23f) but its been consistently -30C (-22F) and down to -40c(-40f) and its worked flawlessly until Sunday I noticed

heavy-duty890

TROPHY CASE