What the source says
The documented condition
NHTSA lists the 2021 Hyundai Palisade in safety campaign 21V840000. The official record says: The brake fluid may be contaminated, which can cause the brake master cylinder inner-cup seals to swell, and reduce braking performance. The stated safety consequence is: Reduced braking performance can extend the distance required to stop the vehicle, increasing the risk of a crash. A make, model and year match does not confirm that a specific VIN is included or that the repair remains open.
Compare the pattern
Symptoms and vehicle scope
Words owners may use
- 2021 Hyundai Palisade weak brakes
- Palisade takes longer to stop
- Palisade contaminated brake fluid
- Palisade service brakes, hydraulic and fluid recall
- NHTSA campaign 21V840000
Symptoms in the record
- Braking performance feels reduced
- Vehicle takes longer to stop
Vehicles and limits
- 2021 Hyundai Palisade
- Vehicles included in NHTSA campaign 21V840000
- VIN confirmation is required
Manufacturer position
What the official procedure directs
Dealers will replace the brake master cylinder, and flush the brake fluid, free of charge. Owner notification letters were mailed on December 24, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 212.
Mileage context
Campaign 21V840000 is based on the recalled vehicle population and VIN, not a published mileage threshold. Mileage alone cannot confirm or exclude it.
Original evidence
Open the documents behind this record.
Safety recall · NHTSA 21V840000 · Oct 27, 2021
Contaminated brake fluid can reduce Palisade braking
NHTSA lists Hyundai Motor America for this campaign and returned this exact make, model and year. VIN status still needs confirmation.
Repair paths and safe checks
Match the action to the evidence.
Complete recall 21V840000
Dealers will replace the brake master cylinder, and flush the brake fluid, free of charge. Owner notification letters were mailed on December 24, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 212.
A year and model match does not confirm VIN eligibility. Do not substitute an owner repair for an open safety recall.
Check the VIN and record what happened
Check the 17-character VIN with NHTSA or Hyundai. Save campaign 21V840000, any warning messages and a short description of when the symptom occurred for the service appointment.
Do not recreate a dangerous symptom for a photo or video.
Record reviewed in the source on August 2, 2026. Confirm the current document and VIN instructions before arranging work.
How we check a problem · All records for the 2021 Hyundai Palisade