NHTSA Complaint - Driver assistance system errors after rains - Dec. 8, 2025

[Tooney]

https://www.nhtsa.gov/?nhtsaId=11703618

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[SergeyIndy]

Let's discuss this. I have not experienced this on the Taycan unless sensors are covered in snow or sleet, but I am not recalling any impact by the rain. I avoid driving Taycan in such weather. I have seen all 3 of mine give me safety systems are off because sensors are dirty at one time or another.

I do agree that if all bumper sensors covered by snow/sleet/or heavy rain, then all car safety system are off. The ones that are at the top of the windshield are cameras do not contribute to safety but more for lane assistance and rain sensing wipers.

I guess there is no engineering marvel at this time to overcome this situation.

 

[FlyingPoint]

I have had this occur twice on my 24 MY4s in the last year. It has ALP and Innodrive. Both occurrences were in moderate to heavy rain and on a highway.

 

[Taycan4S_UK]

I've been facing this issue during heavy rain. emergency braking is the most concerning.

 

[Dresz981]

I had this happen for the first time last week in heavy rain. The weirdest part is it only occurred one way on a round trip. 21 Turbo S.

 

[Jasper4S]

I thought this was normal and caused by the same thing that makes our headlights fog up after driving in the rain. It’s just temperature differences and moisture distrupting the sensors temporary. Is this a Taycan only thing? I remember my Audi A5 doing the same thing once a year

 

[TonyR]

I’ve had the same happen in heavy rain which the PCO told me is down to the sensors getting covered in water and muck. But it goes back to these not being autonomous vehicles and the need for the driver to be in control, assisted by the IT, at all times, not leaving the electronics to do their own thing.

 

[anonymouse]

Occasionally the sensors and/or cameras will be unable to see sufficiently clearly so the vehicle hands control fully to the drive. Everything usually comes back after a few minutes and sometimes pulling up to do a power cycle. And sometimes wiping the sensor, if it's been muddy or lots of salt.

Seems pretty normal for any car with sensors. I'd rather it detected sensor visibility concerns and gave control back to the drive, than ignore them and get something wrong.

(I'd be questioning why the owner who lodged this complaint does not "feel comfortable" driving a vehicle without all the optional add-ons. And why he/she thinks this is worthy of alerting regulators.)

 

[gtm]

https://www.nhtsa.gov/?nhtsaId=11703618

It seems like the complaint is not being read carefully. The problem is not necessarily happening in the rain. "Within a few days of a rain event, I start getting errors ..." "... out for a drive when it rains or within a few days after a rain event." Sounds like water is getting in somewhere and over some period of time migrates to someplace it shouldn't be. Something is probably grounding a circuit and causing the error messages. Probably not a safety issue unless it happens with cruise control or Innodrive engaged and shuts down the assist systems without the usual delay between the warning message and the system disengaging.

 

[d00d]

LIDAR would probably work better, but why bring God to the dealership, and why does God keep coming back?
Maybe it's a Florida Man thing.

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