Recall: Incorrect Headlight Software (ARB4) 2024 model year - September 5, 2024

[Tooney]

Incorrect Headlight Software/FMVSS 108
Incorrect headlight control module software may cause the parking lights not to operate as intended when the turn signals are activated, which can reduce vehicle visibility and increase the risk of a crash.

NHTSA Campaign Number: 24V654000

Components EXTERIOR LIGHTING

Potential Number of Units Affected 954

Summary

Porsche Cars North America, Inc. (Porsche) is recalling certain 2024 Taycan vehicles. The incorrect headlight control module software may have been installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Remedy

Dealers will update the headlight control module software, free of charge. Owner notification letters are expected to be mailed November 1, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB4.
https://www.nhtsa.gov/?nhtsaId=24V654000
https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V654-1927.PDF
https://static.nhtsa.gov/odi/rcl/2024/RCMN-24V654-7219.pdf
https://static.nhtsa.gov/odi/rcl/2024/RCRIT-24V654-9685.pdf

Edited on October 9, 2024: added TSB dated September 18, 2024:
https://static.nhtsa.gov/odi/tsbs/2024/MC-11008606-0001.pdf
Edited on Decembe 2, 2024: added link to owner notification letter: https://static.nhtsa.gov/odi/rcl/2024/RCONL-24V654-8277.pdf
Edited on Jan. 24, 2025: added link to quarterly report:
https://static.nhtsa.gov/odi/rcl/2024/RCLQRT-24V654-7434.PDF

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[W1NGE]

Incorrect Headlight Software/FMVSS 108
Incorrect headlight control module software may cause the parking lights not to operate as intended when the turn signals are activated, which can reduce vehicle visibility and increase the risk of a crash.

NHTSA Campaign Number: 24V654000

Components EXTERIOR LIGHTING

Potential Number of Units Affected 954

Summary

Porsche Cars North America, Inc. (Porsche) is recalling certain 2024 Taycan vehicles. The incorrect headlight control module software may have been installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Remedy

Dealers will update the headlight control module software, free of charge. Owner notification letters are expected to be mailed November 1, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARB4.
https://www.nhtsa.gov/?nhtsaId=24V654000
https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V654-1927.PDF

Incredible really!

 

[whitex]

Hang on, so how differently do the headlights operate in Europe? In the US, "parking" function of the headlights is the same as DRL - 4 white lights in each headlight. Whenever the turn signal is on, DRL (or the white parking light) is turned off, so that the turn signal blinks between all-off, amber-on. In Europe (anyone from Europe please chime in) does it just alternate white-amber instead or white-(white+amber)?

 

[Bennachie]

Nope amber flash, white sidelights. Could this be to do with the rear lamps (controlled by headlamp unit) as we have amber rear turn indicators? I seem to remember USA rears being red..............

 

[whitex]

Nope amber flash, white sidelights. Could this be to do with the rear lamps (controlled by headlamp unit) as we have amber rear turn indicators? I seem to remember USA rears being red..............

When you say amber flash, while white parking/drl lights say on, or does the blinking side turn off the whites? This is about when parking/drl lights are on, not low or high breams.

This recall specifically mentions headlights. This is not likely having to do with the rear lights, those are controlled by the Rear BCM (a.k.a. BCM2). If interested in NA vs. EU tail lights operation differences (and what read US lights look like when BCM2 is coded to EU market), see this thread: https://www.taycanforum.com/forum/t...-tail-lights-on-north-american-taycans.20335/

 

[W1NGE]

When you say amber flash, while white parking/drl lights say on, or does the blinking side turn off the whites? This is about when parking/drl lights are on, not low or high breams.

This recall specifically mentions headlights. This is not likely having to do with the rear lights, those are controlled by the Rear BCM (a.k.a. BCM2). If interested in NA vs. EU tail lights operation differences (and what read US lights look like when BCM2 is coded to EU market), see this thread: https://www.taycanforum.com/forum/t...-tail-lights-on-north-american-taycans.20335/

When a turn signal is activated the four whites become flashing orange. Doesn’t matter if just drls are active only same happens when main lights are on.

When parked, turn indicator active and car powered off then the whites stay on along with the corresponding rear red tail. This is the parking light.

 

[Bennachie]

As above

 

[whitex]

When a turn signal is activated the four whites become flashing orange. Doesn’t matter if just drls are active only same happens when main lights are on.

When parked, turn indicator active and car powered off then the whites stay on along with the corresponding rear red tail. This is the parking light.

I am really not communicating my question clearly, so bare with me. Let me try again - when you say "four whites become flashing orange", does that mean:

1. The headlight flashes between orange and white
2. The headlight flashed between orange and all-off

In the US, it's #2 above, meaning the headlight which is flashing disables the DRL's for as long as the turn indicator stalk is in the turn position. So between flashing orange, it looks like this (right turn signal activated):

This "theoretically" provides more contrast for the flashing orange, however when headlights are on (low or high), the headlights stay on while the turn signal flashes orange.

 

[tigerbalm]

Porsche code for lights:

 

[Bennachie]

Europe is the same. Parking lights - four white DRLs
Indicator with side lights (parking lights) on - four white DRLs extinguish and become 4 amber indicators - no white light at all - until signal is cancelled.

 

[whitex]

Europe is the same. Parking lights - four white DRLs
Indicator with side lights (parking lights) on - four white DRLs extinguish and become 4 amber indicators - no white light at all - until signal is cancelled.

Thanks. I am confused then what the difference is between NA and EU cars which this recall is addressing.

 

[W1NGE]

I am really not communicating my question clearly, so bare with me. Let me try again - when you say "four whites become flashing orange", does that mean:

1. The headlight flashes between orange and white
2. The headlight flashed between orange and all-off

In the US, it's #2 above, meaning the headlight which is flashing disables the DRL's for as long as the turn indicator stalk is in the turn position. So between flashing orange, it looks like this (right turn signal activated):

This "theoretically" provides more contrast for the flashing orange, however when headlights are on (low or high), the headlights stay on while the turn signal flashes orange.

All off same as you. Only the DRLs flash and not the main headlight.

It does not alternate between white and orange - that would be confusing- orange off orange.

 

[W1NGE]

Thanks. I am confused then what the difference is between NA and EU cars which this recall is addressing.

Nothing at the front at least i think.

 

[Bennachie]

You and me, both whitex..............................

 

[mystermykee]

Porsche's cover up for, "Oops. We accidentally programmed 2024 U.S spec Taycans for full matrix functionality."

I say...skip this recall.

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