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it's explained here: power supply - What might be the cause of high pitch sound coming from a switching regulator circuit? - Electrical Engineering Stack Exchange Just because you didn't hear it, that does not mean the phenomenon does not exist. The OP can easily verify this: just turn on...

It is how a switching power supply works; it does by dividing the current into smaller "chunks" by cutting it with MOSFETs then leveling the output. When they are new they make the same sound, just with a lower volume; when they age they can come a little "loose" and you hear the resonant...

That's poor advice. OP, it's the voltage regulator, it's completely normal, don't worry. The engine may be off, but the car surely isn't.

Besides, yes water can get under the hood of a car. The wiring is waterproof, just don't use too much pressure and don't wash the engine when it's hyper hot. Leave the hood open overnight so it can dry well.

I would say, go for it. Just obtain the factory manual because some components must be mounted in fixed directions (the cams hold downs come to mind, sorry I don't know how they are called properly in english). Also, proper tolerances must be insured, so you will have to buy matched pistons and...

Just get the transmission repaired and give her some time. If you drive long enough in your life only one of two things are going to happen from time to time: either brown pants (if you are lucky and drive defensively enough!) or an accident (in which you may be injured or die).

It does. 24-2046 supersedes 23-2350. 23-2350 supersedes 22-2428. 22-2428 supersedes 23-2152, 22-2139, 22-2102, 21-2377 and 21-2434. Anyway any vehicle built on or after 16 August 2022 have the new CFD Drum already installed. Mine was built on the 8th, so it appears I have the old design drum...

The auto does not have rev matching. You can feel the drag of the clutch packs when they close, especially at lower gears. And rev matching does not compensate for the wear of the syncros in a manual car. It's there because it makes the learning curve for a lot of folks less steep.

If that's the case, wrong forum. The S650 have a brake by wire ECU....

.. and shade :giggle:. Edit: I've seen so many otherwise beautiful cars ruined by the sun that I'm a little paranoid on that.

Bleed it as you would on a traditional car, what the S550 is. You'll need to bleed the ABS module only if you replaced it or air entered within, and that's not your case. On FDRS there is the procedure to bleed the module, if you need to. Not sure on Forscan. I'll begin by first filling the...

I guess he's talking about the A/C recirculation. Faulty button?

UV kills practically anything at the molecular level.

This. It's "safe" in the same way it's safe on a manual car, in the sense that you are not over revving the engine. But for sure you are adding A LOT of wear on your clutch packs. Just consider this: under normal operations downshifts happens at very low speeds and at idle load, while upshifts...

My advice is to take it slow. First gear slow. I always take them slow to be mindful of suspensions and bushings and never had a problem. My GT has Magneride and PP, and if I remember correctly sits a little lower than the regular GT, I guess mine and yours should be the same.

That's not how the ECU actually actuates them. The norm is that for low speed operation it's both of them at low speed (series), high speed is both them at high speed (parallel). They are arranged this way for simplicity of operation, fault tolerance and lower noise.

I also thought I didn't need to clean and condition the leather, until I began doing it. Everybody sees the things in a different way and everybody has a different way and intensity in caring things. An 8 years old car for sure it needs the upholstery to be cleaned and conditioned, but nobody is...

You'll be fine.

That's too bad, clean it with a proper leather cleaner and you will clearly see and feel the difference. Each of my car is garage kept, and every time I can appreciate a clear difference. Also, I can recommend a good leather sealant after you thoroughly cleaned the surfaces.

Yes, it is very smooth. My experience with every automatic car is that you have the know the difference between the right and left pedal and use them accordingly. If you slam or stomp on them, the trans is going to shift poorly. But that is true for any automatic transmission. The only thing I...