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Was it recorded with the engine off as well? Points to the AC fan/blower; however, there is a "tik-tik" as well like there is something touching the blower as it spins, say a leaf or else.
These blowers tend to fail (squeak), but the ones I have seen/heard the noise is more like missing lubrication, i.e. metal to metal squeaking.
Here would be my initial approach:
Open the hood
Remove the cover into the AC inlet, see picture below
Once removed, you should see your main battery and the entry/inlet to the AC. You should be able to see the plastic blower wheel from there Update: Before the next step, check if there is something that should not be there, perhaps a flashlight would help as well.
Turn the key to position 2, keep the engine OFF, and turn the AC on, you should hear the blower. Go back to the underhood and look at the blower area. Check for the noise or something that should not be there.
Just be careful with the plastic blower wheel. Do not remove any fixed piece attached to it (balance weights for example), nor try to force it into any position. If you unbalance the wheel position, the noise will be worse since it can now rub the blower shroud. Update:, CAREFUL with the spinning blower, you do not want your hands in there
To replace the filter (only possible from the cabin) here is a video showing the steps
Was it recorded with the engine off as well? Points to the AC fan/blower; however, there is a "tik-tik" as well like there is something touching the blower as it spins, say a leaf or else.
These blowers tend to fail (squeak), but the ones I have seen/heard the noise is more like missing lubrication, i.e. metal to metal squeaking.
Here would be my initial approach:
Open the hood
Remove the cover into the AC inlet, see picture below
Once removed, you should see your main battery and the entry/inlet to the AC. You should be able to see the plastic blower wheel from there
Turn the key to position 2, keep the engine OFF, and turn the AC on, you should hear the blower. Go back to the underhood and look at the blower area. Check for the noise or something that should not be there.
Just be careful with the plastic blower wheel. Do not remove any fixed piece attached to it (balance weights for example), nor try to force it into any position. If you unbalance the wheel position, the noise will be worse since it can now rub the blower shroud.
To replace the filter (only possible from the cabin) here is a video showing the steps
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
since it can now rub the blower shroud.
