06-02-2023, 02:02 PM | #1 |
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Suspension Question
I have a question about the x5M (F85) suspension. I haven't driven my 2018 x5M for about a month and when I decide to drive it, I found my rear suspension dipped but after starting and warming up the x5, it went back to (to what I think is the proper height). Has this happened to anyone before? Is this anything I should be concerned about? I did purchase extended warranty so if this is an issue, I would love to get it fixed while it's still under warranty.
Here are the pics of the before and after I started the car. Thanks in advance!
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06-02-2023, 03:25 PM | #2 |
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Assuming you have rear air suspension? Maybe the airbags deflated and then re-inflated when the compressor kicked in after you started the car up? Could be a puncture in the airbag.
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06-02-2023, 04:49 PM | #3 |
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Likely rear air bags are leaking and need replacing. Has happened to most of us haha
Get yourself 2 x Arnott A-2642 replacement bags and it's a relatively simple job to DIY replacement. Replace them soon though as the compressor is now stressed and can also develop issues if the bags go unaddressed (like mine did) Edit: Forgot you mentioned warranty. Go get the bags replaced |
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06-02-2023, 05:25 PM | #4 |
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Everything mechanical is still stock.
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06-02-2023, 05:29 PM | #5 | |
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06-02-2023, 05:56 PM | #6 |
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If the suspension hasn’t resettled downward…and/or you don’t constantly hear the compressor running…there’s probably nothing wrong other than you hadn’t driven the vehicle for awhile.
When you did start her up…the suspension had dropped slightly so the compressor turned on and corrected the suspension height. That’s what the system is designed to do. Since temperature can affect the air in the springs…since the car hadn’t been driven in a month…the discharge valve probably released some of the air in the one or both of the springs (especially if the ambient temperature changed drastically in the month it was sitting undriven): Discharge valve My e53 X5 has rear SLS and it’s always running the air compressor for various scenarios…especially if it hasn’t been driven in a while….and there’s nothing wrong with the air bags. Again, if the compressor kicked on after not driving the vehicle for a month…and the suspension appears to be the correct height and the compressor isn’t continuously running to pump the suspension back up…then nothing is wrong except for not driving the vehicle enough.
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06-03-2023, 06:52 AM | #7 |
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Great info as always Qsilver7. When I swapped my winter to summer wheels a couple of months ago, I took a quick drive to reset the TPMS. I left on business trip the next day and came home to the rear sitting all the way down. While I loved the reduced wheel gap, I figured my bags were shot. Started the car up, the bags filled and I haven't had an issue since. Think I just confused the system with the jacking or something. All that to say it may just be a one time thing for now.
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06-03-2023, 07:55 AM | #8 | |
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Take two aspirin and call back if the situation persists. Here’s more info that explains the ten modes of the rear axle air suspension that can affect the initiation of adjustment: The EHC control unit uses the various signals and messages to detect the various driving conditions. Depending on the driving conditions, the adapted control functions are switched accordingly.
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06-07-2023, 04:48 PM | #9 |
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Take it to a shop that accepts your warranty. They will “soap” bags and fittings and look for one leaky bag or leakin fitting. Them you and they know what is problem, whether covered by your warranty or not is the question.
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06-13-2023, 11:15 PM | #10 | |
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Thanks for all the great info.
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01-13-2024, 12:58 PM | #12 |
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So it happened again and this time my driver side suspension isn’t lifting in the rear.
After starting the x5 and letting it run for about 10minutes my suspension just sits low now on my driver side only. Has anyone have their suspension replaced recently? Assuming that’s what I will need to do. Anyone know the ballpark figure this may run me? I have an appt with BMW Rallye at the end of January so trying to brace myself for a hefty bill.
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01-15-2024, 11:23 AM | #13 |
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9 times out of 10, it's your rear air bags. As they age, they develop tiny cracks that allow the air in them to leak out. You can try spraying them down with soapy water, if tiny bubbles appear, then you will know their leaking. But the air bags are relatively cheap, if you purchase from an outside source other than BMW. Labor is roughly two hours.
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01-15-2024, 03:04 PM | #14 |
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Just had both my rear airbags replaced at 37k miles on my late 2018, only one was leaking however both replaced under extended warranty. Only dropped sometimes, wasn’t down every morning but seemed worse in cold weather
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03-12-2024, 04:52 PM | #15 |
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I have had the rear dropping over a week - identical on both sides. I was told that this may happen if the car goes into storage mode. I then hooked up a trickle charger for a week and monitored and the rear didn't drop.
But when not hooked up to a charger it drops at the rate of 2-4 mm/day. Sometimes, it doesn't drop. I am confused as to whether this is the airbags or a loose connection in the compressor. I am thinking of replacing the bags given the car is now coming up seven years. When the car returns to the normal ride height 804 mm (?) the compressor cuts out, which means there is no continuous bleed.
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04-02-2024, 04:11 PM | #16 |
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So I had my airbag suspensions replaced over the weekend with Arnott airbags. The pressure drop is same as before and is gradually decreasing. Any thoughts on what this may be ... faulty compressor or air lines?
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04-14-2024, 09:04 PM | #17 |
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I had the same Intermittent sagging issue, except I stupidly did not getting around to replacing the bags.
I finally managed to get my extended warranty to cover the bags (via the dealer) and was good for about a month, and just a few days ago it’s rock bottom again but this time the compressor seems to be running but not inflating either side at all. So, lesson learned…. dont wait too long to get those faulty bags replaced! Technically, it could be one of the components around the compressor, such as the discharge valve, waiting for the dealer to figure out what’s next. |
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