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clicking noise from dashboard

Wed Jul 26, 2017 7:25 pm

I have a random but steady clicking noise, that appears to be coming from far inside the center of the dashboard, behind the radio and tripminder. To me it sounds like a switch or relay being operated.
It only occurs with engine running.
There is nothing else noticeably happening.
Different climate control settings have no influence on it.
No warning lights are on.
The auto dimming high beams doesn't work right now, if that matters :)

Since this noise is actually really hard to locate, I'm going to pull some fuses to find out which circuit feeds it, provided it is driven electrically.
However, maybe you have experienced this before or other ideas of what might driving me crazy here.

I recorded the noise from the driver's seat, while idling.
Sound file:
Download here.

Re: clicking noise from dashboard

Wed Jul 26, 2017 9:24 pm

Good audio!

Turn your AUTO DIM switch down until it clicks into position.

That should do it until you can correct the AUTO DIM sensor behind your mirror.

Re: clicking noise from dashboard

Fri Aug 11, 2017 3:35 pm

I pulled all fuses, except fuse #1 which is among other things for the Electronic Engine Control (EEC) module, and the noise remains!
I'm afraid to pull the fuse for the Electronic Engine Control (EEC) module and run the engine then to test this one, too. Is it safe to do so? Will the engine even start without this fuse?
By the way, the clicking noise appears very randomly and sometimes comes on very late while idling. But it seems like it can be triggered by accelerating a bit.

Yeah, my AUTO DIM switch is already all the way down, thanks. ;) Another sensor has also been tested, with no effect so far. Different story... :)

Re: clicking noise from dashboard

Fri Aug 11, 2017 8:51 pm

The factory Theft Deterrent System, when activated, will flash our hazards THROUGH the flasher relay (the large round one).
Did you remove that also?

Re: clicking noise from dashboard

Tue Aug 22, 2017 2:53 pm

The noise actually came from the engine bay, near the firewall. It was caused by a malfunctioning aftermarket device, that normally would allow additional air to flow into the inlet manifold during cold engine startups. This reduces pollution and therefore taxes here in Germany. ;) I unhooked it for now and will troubleshoot it later.

Re: clicking noise from dashboard

Wed Aug 23, 2017 3:06 am

I'm glad to read that you found out what the cause was!
We don't have anything like that in the states that I can think of so I'd never have come up with the answer :(

Re: clicking noise from dashboard

Wed Sep 06, 2017 4:49 pm

Hahaha no problem! :lol: I still got plenty of questions for you, if not even more, that I'm sure you can help me out with :D

Like, why can this device no longer handle the oxygen sensors anymore, that it is attached to? They say, the clicking noise is a sign for bad oxygen readings. I have no warning light and no trouble codes. But my fuel consumption got very high, too.
I'm going to replace both oxygen sensors and will see what happens...

Re: clicking noise from dashboard

Thu Sep 07, 2017 10:15 pm

If nothing else, you'll now get more accurate readings :)
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