Grinding sound from dashboard when ignition is at ON position

[Silas82]

Good day E34'ers,

After a trip from KL to Tangkak and back, my e34 now produces a Grinding like sound whenever the ignition is at ON position.

However once I start the car, the grinding sound disappears. The grinding sound would come from the dashboard on the drivers side. Anybody knows what is it all about? Cheers!

 

[ICEMAN 68]

i think it's the air cond cabin flap shutting down.

 

[Silas82]

i think it's the air cond cabin flap shutting down.

however as long as i dont start the car, the grinding sound would still be there.... could it be the starter?

 

[antiquer]

Heater pump maybe?

 

[ICEMAN 68]

however as long as i dont start the car, the grinding sound would still be there.... could it be the starter?

starter don't produce such sounds when the ignation key is turned on ,,,, the noise from the starter is usually unbareable as it's loud !!

 

[moots]

those are the sounds of the stepper motors hunting.sounds like electrons moving moving about right?
the stepper motors controls the flaps of the ventilation system and when old they produce such sounds.nothing to worry.
my previous e34 was like that...

 

[Silas82]

I have no idea what it is.. but thanks for all the inputs...

 

[Silas82]

those are the sounds of the stepper motors hunting.sounds like electrons moving moving about right?
the stepper motors controls the flaps of the ventilation system and when old they produce such sounds.nothing to worry.
my previous e34 was like that...

Is it expensive to replace these motors? Its actually kinda annoying

 

[ICEMAN 68]

those stepper motors cost around rm200~300 ....as can be excessed from the engine bay ..towards the middle wiper side ...