Recall 21V794 affects 11,827 2020-2021 Porsche Taycan vehicles for pre-collision hazard lights activating without an emergency. Repair is free at any franchised Porsche dealer.
Porsche is recalling 11,827 2020-2021 Taycan vehicles because the pre-collision automatic hazard lights can turn on in non-emergency situations. That false hazard signal can confuse nearby drivers and raise crash risk; Porsche dealers will update the vehicle software free of charge.
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What's wrong?
The affected part on the 2020-2021 Porsche Taycan is the airbag control unit. It is an electronic module that carries safety-related software, including the logic for automatic hazard warning lamp activation before a collision. Hazard lamps are supposed to warn other road users only in situations allowed by the federal lighting standard.
On these Taycans, the production coding rule lets the pre-collision hazard-light feature activate beyond what FMVSS No. 108 permits in the United States. The same type of feature is allowed in other markets, but this software setting does not match the U.S. rule. The result is that the hazard lights activate in non-emergency situations.
If the system turns the hazard lights on, the driver sees the turn signal lamps in the instrument cluster and the hazard warning control indicate the activation. That is the warning sign owners would notice before or during the unwanted hazard-light operation.
Who's affected?
Both model years use the same airbag control unit component tied to the hazard-light recall.
| 2020 Porsche Taycan | Hazard flashing warning lights |
|---|---|
| 2021 Porsche Taycan | Hazard flashing warning lights |
| Units affected | 11,827 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific vehicle is included.
What's the safety risk?
Hazard lights that activate outside an emergency can confuse nearby drivers and increase the risk of a crash. The instrument cluster turn signal lamps and hazard warning control show activation, so treat unexpected flashing as a reason to schedule service soon. Repair is free at any franchised Porsche dealer.
What should I do?
- Check your VIN to confirm your 2020-2021 Porsche Taycan is included in this recall.
- Contact a franchised Porsche dealer to schedule the free hazard-light reprogramming that stops the automatic hazard lights from activating in non-emergency situations.
- Bring the recall notice Porsche mailed, or reference recall number 21V794 when you call.
- Avoid treating the automatic hazard-light activation as a reliable emergency signal until the reprogramming is complete.
- Call Porsche customer service at 1-800-767-7243 with questions.
What happens at the repair
At the dealer, a Porsche technician reprograms the hazard light system so the automatic hazard lights respond as intended. The recall repair is free, with parts and labor covered. Out of pocket repairs already paid are handled through the Porsche New Car Limited Warranty, not through a separate reimbursement program, because the affected 2020-2021 Taycan vehicles were still under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| October 13, 2021 | NHTSA published the recall |
|---|---|
| October 14, 2021 | Dealer notification began |
| October 14, 2021 | Dealer notification ended |
| December 2, 2021 | Owner notification mailed |
| December 13, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V794?
Recall 21V794 covers 11,827 2020-2021 Porsche Taycan vehicles whose pre-collision automatic hazard lights can activate in non-emergency situations. That creates a Federal Motor Vehicle Safety Standard number 108 compliance issue and can confuse other drivers. Porsche dealers will reprogram the hazard lights for free.
What should I do if my 2020-2021 Porsche Taycan is on this recall?
Check your VIN to confirm your specific Taycan is included in recall 21V794. If it is, contact a franchised Porsche dealer and ask for the AMC1 hazard-light reprogramming. The dealer repair is free, and Porsche customer service is available at 1-800-767-7243.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the safety defect at no cost to the owner. Porsche dealers will reprogram the hazard lights free of charge for included 2020-2021 Taycan vehicles.
What is the safety risk in recall 21V794?
The safety risk is confusion for nearby drivers. If the automatic hazard lights activate when there is no emergency, other drivers can misread what your Taycan is doing, increasing crash risk. The fix is a free dealer reprogramming of the hazard lights.
What if I bought my Porsche Taycan used?
The free recall repair still applies. Recall eligibility follows the VIN, not the first owner. Check your VIN to confirm whether your used 2020-2021 Taycan is included, then reference recall 21V794 or Porsche recall number AMC1 when you call the dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V794000 |
|---|---|
| Porsche customer service | 1-800-767-7243 |
| NHTSA recall # | 21V794 |
| NHTSA recall # (full) | 21V794000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →