R56 Heater blower motor issue

[gjslutz]

2007 R56 Hatchback with automatic heat control.

I replaced the Final Stage Unit (Blower Regulator) Blower still will not turn on.

If I bring the power on to where the auto control lights up, I can change the speed and temp. on the screen. Still no blower action. If I unplug the power at the blower and jump it with 12V, it will run.

If I power off the car, and unplug the blower motor. Then power up the car to where the control screen lights up. I can plug the motor to the power lead from the regulator, the motor will then run and I can control the speed from the screen on the control screen.

If I shut the power off and then power it back up, no action till I do the above again.

Looking at my Bentley manual. It shows an K4 heater blower relay in the A4010 junction box.

What & where would I find that. How to ID it?

I used my volt meter to check the voltage on the regulator pins 1 through 4 and all looked good per what was shown on the blower regulator test section, unless I missed something.

Thanks
Gary

[gjslutz]

It was loose wire on regulator pin 3. all is now well.

[garagodaisuke]

Good thing you found the missing piece

[Luccia at Pelican Parts]

Glad you figured out the issue, Gary. Thanks for reporting back with it as it may help someone else out in the future.