Recall 20V543 affects 652,024 2016-2021 Hyundai Tucson SUVs for HECU short-circuit fire risk. Park outside until the free repair is complete.
An engine compartment fire increases the risk of injury or a crash. Watch for smoke from the engine compartment, a burning or melting odor, or MIL or ABS lights, and park outside and away from structures until the recall repair is complete. Repair will be free at any franchised Hyundai dealer once available.
Hyundai is recalling 652,024 2016-2021 Tucson SUVs because the Anti-lock Brake Hydraulic Electronic Control Unit can corrode internally and short circuit, causing an engine compartment fire. Owners should park outside and away from structures until Hyundai opens the free dealer repair, then keep that guidance in place until the repair is complete.
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What's wrong?
The ABS assembly in 2016-2021 Hyundai Tucson vehicles is the hydraulic controller for the anti-lock brake system. It helps manage brake fluid pressure so the wheels keep braking grip during a hard stop. Inside that unit is the HECU, a hydraulic electronic control unit that uses a circuit board to control brake hydraulic functions.
On affected Tucsons, flux residue from supplier soldering can remain on the ABS module's main controller board. Heat and humidity can turn that residue into a corrosive path across the board. That corrosion creates an electrical resistance short inside the unit, and the short can start an engine compartment fire.
Owners can notice smoke from the engine compartment, a burning or melting odor, or the MIL, also called the check engine light, or ABS light turning on. Treat those signs as warning signs and contact a Hyundai dealer about the recall repair.
Who's affected?
Spans six Tucson model years (2016-2021), all tied to the same hydraulic brake system component.
| 2018 Hyundai Tucson | hydraulic brake system |
|---|---|
| 2019 Hyundai Tucson | hydraulic brake system |
| 2020 Hyundai Tucson | hydraulic brake system |
| 2021 Hyundai Tucson | hydraulic brake system |
| 2016 Hyundai Tucson | hydraulic brake system |
| 2017 Hyundai Tucson | hydraulic brake system |
| Units affected | 652,024 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
An engine compartment fire increases the risk of injury or a crash. Watch for smoke from the engine compartment, a burning or melting odor, or MIL or ABS lights, and park outside and away from structures until the recall repair is complete. Repair will be free at any franchised Hyundai dealer once available.
What should I do?
- Check your VIN to confirm your 2016-2021 Hyundai Tucson is included in this recall.
- Watch for Hyundai's owner notice if you have not received one; notices began November 2, 2020.
- Park outside and away from structures until the recall repair is complete.
- Contact a franchised Hyundai dealer after your VIN is confirmed and ask when the free HECU fuse replacement is available for recall number 20V543.
- Ask the dealer whether your Tucson also needs the ESC software update that addresses the HECU short and engine-compartment fire risk.
What happens at the repair
Until the final repair is available, keep the Tucson parked outside and away from structures as a precaution. Hyundai says the dealer repair will replace the HECU fuse, and for 2019-2021 Tucson vehicles, a Hyundai technician will also update the Electronic Stability Control software. The final dealer repair will be free once available. Hyundai's reimbursement plan covers owners who paid out of pocket for related repairs before the recall repair. Contact Hyundai customer service with repair documentation to claim reimbursement.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 4, 2020 | NHTSA published the recall |
|---|---|
| October 30, 2020 | Dealer notification began |
| October 30, 2020 | Dealer notification ended |
| October 30, 2020 | Interim owner notification (was planned for this date) |
| November 2, 2020 | Owner notification mailed |
Frequently asked questions
What is recall 20V543?
Recall 20V543 covers 652,024 2016-2021 Hyundai Tucson vehicles with an Anti-lock Brake Hydraulic Electronic Control Unit that can corrode internally and short. An engine compartment fire can increase the risk of injury or crash. Hyundai dealers replace the HECU fuse for free, with ESC software updated on 2019-2021 vehicles.
What should I do if my 2016-2021 Hyundai Tucson is on this recall?
Check your VIN to confirm your specific Tucson is included in recall 20V543. If it is, contact a franchised Hyundai dealer and ask for recall 195 or NHTSA campaign 20V543. Park outside and away from structures until the recall repair is complete.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost, and Hyundai says the recall repairs are free. A franchised Hyundai dealer will replace the HECU fuse, and 2019-2021 Tucson vehicles also receive an ESC software update.
What is the safety risk?
The safety risk is an engine compartment fire. The HECU can corrode internally and create an electrical short, which can start a fire and increase the risk of injury or crash. Until the repair is complete, park outside and away from structures.
What if I bought my Hyundai Tucson used?
The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific Tucson is included, then call a franchised Hyundai dealer with recall 195 or NHTSA campaign 20V543.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V543000 |
|---|---|
| Hyundai customer service | 1-855-371-9460 |
| NHTSA recall # | 20V543 |
| NHTSA recall # (full) | 20V543000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Misc. Document (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 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →