I have Toyo Observe Gsi5 (215/65R17) on my J10 and am very pleased with their life expectancy. Now at 30k miles and expect at least another 10k. This my third set of Toyos, and on previous Suzuki Vitaras got about 43k miles before down to 3mm. all round with a little rotation. Least impressive is co...

Memory not what it used to be, I think both dials set to "Hi" is correct... I have edited previous posts. Hope that's correct.

Yes, that sounds right. Switch the ignition on once when the actuator is loose so the cogs line up right on refitting. This is my understanding of their working, the cogs on the heater are sprung to the hot setting. Hope it goes well.

Two screws. Fix could be, if you're lucky, to set both dials to "Hi", remove the actuator, and replace it. It is situated partly over the cover for the pollen filter. The cogs should then line up correctly. (if you're lucky... )

Pollen filter changed recently? Both heater controls must be on "Lo" before removing the actuator...

EU laws from November 2014 made TPMS obligatory.

But an Austin 7 made it up Ben Nevis with a passenger in 1928...

Sorry not to be more helpful, but on my J10 the heavy earth leads down in front of the battery tray through a narrow crack beside the inner wing, and it would take a fair bit of dismantling to find the ultimate destination. That's the starting point though. Best of luck.

If you remove the actuator, then with the ignition on, on turning the temperature control you should see action. Just begin, and end on Hi before replacing, so the cogs line up correctly. Good luck.

Changing the pollen filter may require removing the actuator which is positioned by two screws. If heater is not set on Hi both sides before removal, the actuator will not have the cogs correctly aligned causing problems.