My X6 has a single pressure unless loaded, though it depends upon tyre sizes as well. With the 20” set it’s either 32 or 34psi from memory, but the 19” set it’s different - can’t remember what though, and those were for winter rubber. It is the only BMW I’ve owned where they are the same though. The...

Have you tried listening closely to each sensor front and rear? They should ‘click’ when active. The error code is also shown with faulty sensors. Any not clicking are faulty. It’s a fairly common fault - or was back then.

D35b is a DSC error with a sensor.

2786/2787 looks like a throttle sensor or potentiometer issue

Have you had a look at bmwfault.codes as a reference site? Might help you a bit.

I’ve just had a look at the sump replacement procedure and WOW! There’s a ton of stuff to remove, a hardware store level of fixings and even a straight edge required!! Whatever happened to ‘simple’? I mean half-a-dozen screws and a gasket. 15 minutes and done.

I also use a suction system now.

Definitely looked dodgy so I have deleted the post.

It’s no different with the latest models either. OK it’s not engines on the i4, but BMW has (along with other manufacturers) had to issue a number of recalls. The last one for the i4 was a sub-contractor made coolant changeover valve - similar to a three-way central heating valve - which leaks below...

This thread is from 14 years ago!

Mine still uses 0w30 Castrol FST Synthetic as it has since new. I don’t push the engine hard at all so no idea why they should suffer bottom end issues. N-series are long gone as they were replaced by the B-series. The 4-cyl unit was known for timing chain issues. I also allow the engine to warm bef...

I had a very bad experience with a plumber. He was happy to turn out next door (who recommended him) as their jobs were more lucrative money wise. Changing two kitchen mixer taps? Not interested! Ended up doing them myself.

What you could do in this case is use a suction oil remover. They may get sniffed at, because of alleged debris left behind, but they work.

Very handy….but you probably wished you’d known that before cursing up a storm!

That error code covers a number of issues. Did you inadvertently move any wiring, or even not plug something in (it wouldn’t be the first time one of us has done that)? Check from the throttle valve back into the ECU for continuity.

Air leak? Any split hoses?

What error codes are showing?

Wierd! Intriguing at the same time.

It’s good to see a few well looked after examples still around, though they are definitely getting rarer. I see one of two a month may be.