Steering wheel heating not working

[roadsalt]

Hi all. 2011 lx570 here. Heating steering not working. I hit the button and no light turns on. I swapped the fuse to no avail. What’s next?

 

[gaijin]

What was the outside air temperature when you tried the heated steering wheel?

 

[roadsalt]

What was the outside air temperature when you tried the heated steering wheel?

70s. Would that make a difference?

 

[gaijin]

70s. Would that make a difference?

I don't remember the exact temperature, but if you check in the Owner's Manual, I'm sure one of the conditions for the heating to work on the steering wheel is that the outside temperature be below a certain temperature - maybe 40 Deg F? Bottom line is - if it's too warm outside, heater won't work.

HTH

 

[roadsalt]

I don't remember the exact temperature, but if you check in the Owner's Manual, I'm sure one of the conditions for the heating to work on the steering wheel is that the outside temperature be below a certain temperature - maybe 40 Deg F? Bottom line is - if it's too warm outside, heater won't work.

HTH

Ah thats a relief. It was bugging me that I perceived something as non-functional. Although, I don't see it in the PDF version of the manual.

 

[gaijin]

Ah thats a relief. It was bugging me that I perceived something as non-functional. Although, I don't see it in the PDF version of the manual.

View attachment 3994419

I may be wrong, but I remember it from somewhere... Can anyone else confirm?

 

[bloc]

For the record the whole steering wheel will not heat up, only the leather parts.

Just to make sure you're checking the minority of the thing that does any good.

 

[riffman12]

I may be wrong, but I remember it from somewhere... Can anyone else confirm?

When I bought my 2014 LX it was 85 outside and I had the AC running. Steering wheel still got warm pretty quickly.

 

[Battleship]

Mine just worked when the truck thought it was 87. That's an LX, they probably function at a higher temp to accommodate a more delicate clientele.

 

[roadsalt]

Alright now that we know it works in warm weather. I’ve replaced the 10A mini fuse, the indicator light doesn’t come on, and it’s not getting warm. What’s my next play gang?

 

[riffman12]

can't help unfortunately, but might be worth reaching out to this member to see if he fixed it. Seems to be in the same boat with functioning fuse and no LED light turning on - 2011 LX heated steering wheel and techstream... - https://forum.ih8mud.com/threads/2011-lx-heated-steering-wheel-and-techstream.1217869/

 

[roadsalt]

can't help unfortunately, but might be worth reaching out to this member to see if he fixed it. Seems to be in the same boat with functioning fuse and no LED light turning on - 2011 LX heated steering wheel and techstream... - https://forum.ih8mud.com/threads/2011-lx-heated-steering-wheel-and-techstream.1217869/

That guy hasn’t been seen since 2021. Some say he’s still trying to get it to work

 

[roadsalt]

Anyone have a wiring diagram showing where this runs? I’d like to do some voltage tests.

 

[roadsalt]

I think if I had a wiring guide for the pins on the back of the combo switch unit I could figure it out. Maybe it’s just a faulty switch unit?

The switch unit part number is 84970-60140-C0 for anyone watching.

 

[roadsalt]

Ok so I figured out that my ECU-IG No2 fuse is pulling half voltage, 5-6v

I think this is a good clue into the issue.

The heated steering fuse was a full 12-13v

 

[roadsalt]

Toyota dealer said check the steering column. Nothing is screaming “heating component” at me. Anyone know where it is?

 

[roadsalt]

Changed the fuse 3 more times just to be safe ….. no led on button. No heat on wheel