Uncommanded suspension lowering from raised setting - car lowered itself when parked 2 times this week

[RSouthern]

Hi all, starting a new thread on this since I had posted my observations of this event in the battery tray damage thread earlier in the year but the car hadn't done it's trick in a while. That changed this week. it happened on 2 separate days this week while parked, my '22 GTS was in the raised suspension position (this is a location saved behavior although I have to sometimes manually trigger it - press the button) for my work multistory parking lot. I need to have it raised to clear the speed bumps all over the ramps to the different levels, so if the car isn't raised, it will scrape.

So the car is parked and turned off in the lot (on the 4th floor of 7), in normal mode (I don't change this these days, always it normal), with the suspension raised, when I leave it. I don't access the car via the "My Porsche" app. I just turn it off (left side button), get out and lock it. 8 hours later I come back and it has lowered itself. On 2 separate days this week, parked in roughly the same location in the lot. This is dangerous given the cost of damage to the undertray/battery protection.

Has anyone else seen this happen with your cars? Is it possible the car has a partial view of the sky and it's GPS system is getting inaccurate/jittery readings, causing the computer think the car is exceeding 20mph and lowering the suspension? I have no idea how to prove this to the dealer to look at a repair (and you KNOW they will need to replicate the issue). Would an OTA update to the map or other software trigger the suspension reset?

I want this behavior to stop because if I don't check it every time, I could leave in a hurry and have some expensive repair bill. Also, not knowing what is triggering this means I can never park straddling a speed bump since the car could lower itself onto the bump, damaging the tray.

not good.

any ideas?

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[Vercingetorix]

Put the suspension in jack mode. This may show if one of your airbags is leaking.

 

[RSouthern]

Would an airbag leak lead to the suspension resetting to it's default mode? I had an s550 MB with a suspension airbag system leak and it would gradually settle over the course of a few days in the garage but would pump itself up every time I started it, so I could hear the pump and know (and it visually settled too). I leave the Taycan in my garage for 4-5 days at a time Thurs night to Tuesday morning most weeks and it won't settle at all. what happened this week and in the past happens in less than 8 hours at the office. Also, there's no error and the dashboard light is off when it's down (but was on when I left it), like the button was pressed (except it wasn't).

 

[sufcrusher]

I've seen it happen too. Kind of random. Not very often. Have never been able to figure out any pattern.

My guess has always been that some OTA update, and/or reboot of one of the related systems causes it to go to its default state.

Which sux and makes it pretty dangerous to park over a high curb or bump.

 

[Vercingetorix]

I’m thinking maybe a safe mode when there is a leak. Not all issues throw codes. Just throwing things out to try that cost nothing to implement. I would buy a code reader that works with a Taycan. Guaranteed to pay for itself by avoiding even 1 dealer trip.

 

[Gino]

Hi all, starting a new thread on this since I had posted my observations of this event in the battery tray damage thread earlier in the year but the car hadn't done it's trick in a while. That changed this week. it happened on 2 separate days this week while parked, my '22 GTS was in the raised suspension position (this is a location saved behavior although I have to sometimes manually trigger it - press the button) for my work multistory parking lot. I need to have it raised to clear the speed bumps all over the ramps to the different levels, so if the car isn't raised, it will scrape.

So the car is parked and turned off in the lot (on the 4th floor of 7), in normal mode (I don't change this these days, always it normal), with the suspension raised, when I leave it. I don't access the car via the "My Porsche" app. I just turn it off (left side button), get out and lock it. 8 hours later I come back and it has lowered itself. On 2 separate days this week, parked in roughly the same location in the lot. This is dangerous given the cost of damage to the undertray/battery protection.

Has anyone else seen this happen with your cars? Is it possible the car has a partial view of the sky and it's GPS system is getting inaccurate/jittery readings, causing the computer think the car is exceeding 20mph and lowering the suspension? I have no idea how to prove this to the dealer to look at a repair (and you KNOW they will need to replicate the issue). Would an OTA update to the map or other software trigger the suspension reset?

I want this behavior to stop because if I don't check it every time, I could leave in a hurry and have some expensive repair bill. Also, not knowing what is triggering this means I can never park straddling a speed bump since the car could lower itself onto the bump, damaging the tray.

not good.

any ideas?

I cannot trust the air suspension in my 2021 Taycan. I parked over a high curb at a shopping center, went in to the store for 20 minutes and came back to find the lift had lowered onto the curb even though this position was saved to be in the up position. It scraped the front plastic tray badly coming off the curb.
Now I have the opposite issue where the lift activates within 10 seconds once exceeding 65 mph and it stays up until you drop the speed below 10-15 mph.
This has caused the kWh/mile to drop significantly on long highway drives by as much as 15-20% at speeds averaging 70-80 mph going to Nevada & Utah where speed limits are up to 80 mph.
Taking it in to the dealer again on Monday but was not impressed Porsche could not replicate the issue when I clearly explained the behavior of the airlift system.
It’s a great feature if you could count on it but you can’t. Trusting it will be up when you need it up to prevent damage is all on the owner giving a false sense of security since if it fails to stay up and the vehicle is damaged Porsche is not responsible for the damage their airlift system caused. The airlift is a toy not a feature and should never be counted on to avoid curbs, speed bumps, etc. All these locations must be approached very cautiously in case the lift has not activated to lift & stay lifted properly, activated at speed improperly raising the lift which decreases handling & efficiency.
One statement the dealer has made is they cannot replicate problems which require test driving the vehicle above the posted speed limit of 65 mph which is the highest speed possible in my area. If this is the case then the vehicle must be able to be tested on a dynamometer at least or they must use their local test track in Long Beach about 20 miles away to confirm the issue of a failing or improperly activating air lift system.

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