[blake6551]

Came home today and noticed my wife’s 45e was sagging on the drivers rear wheel. Anyone experienced something similar?

She’s been out of town for five days and the car has not been driven, I’m assuming there may be a slow leak?

I started the car and reset the air suspension by turning it off and then on and it fixed the issue for now.

Pic attached.

[MystroX5]

It’s not normal as it’s a sealed system. Have it checked out.

[Auricom]

Originally Posted by blake6551

Came home today and noticed my wife's 45e was sagging on the drivers rear wheel. Anyone experienced something similar?

She's been out of town for five days and the car has not been driven, I'm assuming there may be a slow leak?

I started the car and reset the air suspension by turning it off and then on and it fixed the issue for now.

Is the entire vehicle lowered or just the one wheel?

When the vehicle is parked for long periods of time, it can lower itself and is not a malfunction.

[blake6551]

Originally Posted by Auricom

Is the entire vehicle lowered or just the one wheel?

When the vehicle is parked for long periods of time, it can lower itself and is not a malfunction.

Just that wheel

[Auricom]

Originally Posted by blake6551

Just that wheel

G05's air suspension is a closed system and each strut has a residual pressure retention valve. The valve maintains air strut residual pressure of 2.2 to 3.2 bars so there's no complete loss of pressure in the air suspension strut.

The front two air struts are jointly controlled and the rears separately.

If it's the one, get it checked out to see if it reoccurs, since you mentioned it's all are back to normal after driving.

And definitely have it checked out if there's was a Check Control message.

Did you get a Check Control message?

"Leakages
After longer stationary periods, the vehicle may reach a low level due to leakage. To prevent damage due to reduced underbody clearance, the driver receives a corresponding Check Control message."

Leakages are equalized within 32h via a wake-up control. For this, the vehicle wakes up at various time intervals and adjusts the ride height if necessary.

Troubleshooting will entail:

• Adjusting and note maximum storage pressure of the pressure accumulator with assistance of workshop information system ISTA
• Deactivate air suspension (workshop mode)
• Search for leak (check components using leak detection spray)
• Determine storage pressure again after some time and check plausibility

They'll also check the Electrical Height Control (EHC) unit which monitors the air suspension components and stores faults that have occurred:

- Pressure sensor - Functional check of the pressure sensor
- Pressure accumulator - Filling and draining of the pressure accumulator
- Vehicle level - The following levels can be set: Terrain ride height, High ride height, Normal ride height, Dynamic ride height, Sport ride height, Load ride height
- Ride height adjustment - Start-up of the ride height sensors
- Compressor cycle - Functional check of the compressor
- Air spring - Filling and draining of the individual pneumatic strut assemblies
- Status values - Output of all system-related status values such as pressures and ride height
- Delete transport mode
- Reset the transport mode

If the communication to the EHC control unit fails, they'll run the standard checks (global test module).

If there is an internal control unit fault, the following behavior is to be expected:
- Fault memory entry in the control unit for the electronic height control (EHC)
- Check Control message in the dashboard

[blake6551]

No check control message, just saw the driver rear sagging, got in, everything looked normal on startup, and cycled the suspension to fix it.

[LarsOtium]

If you are still under warranty than personally I would bring it in and have it checked out. What’s the downside? Bad dealership coffee?

[blake6551]

Originally Posted by LarsOtium

If you are still under warranty than personally I would bring it in and have it checked out. What’s the downside? Bad dealership coffee?

Yep, I'm gonna take it in. Just wanted to make sure it wasn't normal after a week of sitting (I didn't think so).

It's only two months old, so no warranty issues.

[M40i4me]

Originally Posted by blake6551

Yep, I'm gonna take it in. Just wanted to make sure it wasn't normal after a week of sitting (I didn't think so).

It's only two months old, so no warranty issues.

My wife’s is 2 years old and so far no issues. Sounds like a possible defect?

[JRAtlanta]

Blake, I had the same problem and at the same corner of my 45e. Dealer inspected and ordered a new air shock which put the vehicle out of commission at the dealership for nearly 60 days (in Georgia, this qualifies as a lemon law vehicle due to days out of service). The dealer was returning the vehicle to me when a warning light came on for the hybrid control and the box was ordered. This would require the 45 to be out of service an additional 30+ days waiting on parts. BMW and the dealer worked with me and I should take delivery of a 2022 model at the end of March. Side note, I’ve been in an X3 loaner for this period of time. Dealer has been fantastic. Definitely is it the dealer as I was told I couldn’t drive the 45 for safety reasons. Best of luck and keep us posted.

[Dgjo2022X5MC]

Definitely take it in. Something is up.

Can lead to air compressor failure from continuous refilling.

The air bags usually last ⅘ years until they leak.

[floop]

I had to replace an air bag in November. Took 3 weeks for dealership to get the part.

[Auricom]

With the G05's air suspension, if there is an issue with the air strut the entire unit is replaced.

The "bag" forum members are referring to is a U-type bellows sealed in the pot and isn't serviceable.

"The U-type bellows or the shock absorber cannot be replaced separately."

[Dgjo2022X5MC]

Originally Posted by Auricom

With the G05's air suspension, if there is an issue with the air strut the entire unit is replaced.

The "bag" forum members are referring to is a U-type bellows sealed in the pot and isn't serviceable.

"The U-type bellows or the shock absorber cannot be replaced separately."

That's right. Not sure about F95/6, but the G05 has integrated strut/air bags. My F86 had separate rear strut/air bags.

I'm going to look under my f95 as I'm curious.

Good luck. Probably need a new strut.

2 pics from the tech doc for G05. One from f85/6.

[wifesbimmer]

It is definitely not normal. I had the exact same issue with our previous F15. At first, I didn't much of it since it raised and leveled itself after turning on the ignition. However, the issue resurfaced in a more frequent manner. It turned out that there was a slow leak in the system. They ended up replacing both of the rear suspensions. This was why I deviated away from air rides with our G05.

If it is still under warranty, there is no point of sweating. Take it in.

[edtreo]

This is air bag leak and needs to be fixed ASAP otherwise the air pump will overworked and break prematurely. There are rebuild and aftermarket option that meets or surpass OEM.

[Marty in NY]

Question: For those who buy and keep their X5's beyond warranty...If at some point beyond warranty the air suspension system fails and you would like to replace the air shocks with non air shocks, like an X5 that came from the factory without air suspension, what sort of job would it entail...aside from the mechanicals of removing the air shocks and bolting up the non air shocks?

- Will the normal non air shocks mount in the same places as the air shocks? Are they dimensionally equivalent? Including mounting holes, brackets and connected suspension points?

- Can the air suspension electronics simply be unplugged, coded out, etc so it doesn't throw codes or make the X5 inoperable?

- Whaddayathink? Doable?

[Smoothie]

I don't have the exact problem, as I don't notice a difference in suspension height when sitting for a long time, but I do notice that my car is not 'level' through each setting.

It seems the rear is always lower. It is a 2019 under warranty, and the dealer said everything is normal. Should I push the issue?

[blake6551]

Update. I took it in, they had it all day, inspected it for leaks, hooked it up to the computer for fault codes.

Dealer is claiming there is no leak and they can't replicate the issue...

[Nikita44]

Originally Posted by blake6551

Update. I took it in, they had it all day, inspected it for leaks, hooked it up to the computer for fault codes.

Dealer is claiming there is no leak and they can't replicate the issue...

What was their reaction to the pictures?

[blake6551]

They placed them in the service record file. My wife is going out of town in two weeks, so I'll let is sit a few days again and see what happens.

Assuming it sags again (I'm pretty confident it will), I'm going to take it in and make them keep until its fixed, I'll make sure to get a loaner this time. I highly doubt this was a one time occurrence, there must be a leak somewhere in the system.

[Nikita44]

suggestion: get a yard stick and take a pic with the yard stick against the fender at what is assumed normal height, and then if it sags, take another with the yard stick for comparison/proof.

Good luck.