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Manufacturer recall number

Infiniti recall R21B4, R21B5

Infiniti calls it R21B4, R21B5. NHTSA filed it as campaign 21V774000 on Oct 4, 2021: hybrid propulsion system on the 2016–2017 Infiniti and Nissan, 7,634 vehicles potentially affected. One recall, two numbers — the dealer quotes the manufacturer’s, the federal record carries NHTSA’s.

What NHTSA has under this number

Source: 49 CFR Part 573 filings
NHTSA campaignVehiclesComponentFiledAffectedSeverity
21V7740002016–2017 Infiniti and NissanHybrid Propulsion SystemOct 4, 20217,634high
Problem Nissan North America, Inc. (Nissan) is recalling certain 2014-2015 Nissan Pathfinder Hybrid, 2015-2016 Murano Hybrid, and 2014-2017 INFINITI QX60 Hybrid vehicles. The Hybrid Powertrain Control Module (HPCM) software may shut down the hybrid system and the engine under certain conditions, causing a loss of drive power. Risk A loss of drive power increases the risk of a crash. Fix Dealers will reprogram the HPCM software, free of charge. Owner notification letters were mailed March 31, 2022. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200. Nissan's numbers for this recall are R21B4 and R21B5.

The manufacturer’s own words as filed for 21V774000. Every model year it covers, the build window and the filed PDFs →

Two numbers, one recall

Every safety recall carries two identifiers. R21B4, R21B5 is the number Infiniti assigned in its own system: it is what appears on the owner letter, on the dealer’s service screen and on the repair order. 21V774000 is the number NHTSA filed the same recall under when the manufacturer reported it, and it is the one every federal record, this site included, is keyed on.

The repair is free by federal law for vehicles up to fifteen years old. Whether one particular vehicle is included is settled by its VIN against the manufacturer’s build list, not by its model year.

Check one specific vehicle

Both lookups check a VIN against the manufacturer’s own list and say whether the repair is still outstanding on that vehicle.

Common questions

Source: NHTSA, 49 CFR Part 573

Is R21B4, R21B5 the same recall as 21V774000?

Yes. R21B4, R21B5 is Infiniti’s own number for it; 21V774000 is NHTSA’s. One recall, two references.

Which vehicles does R21B4, R21B5 cover?

2016–2017 Infiniti and Nissan, 7,634 vehicles by the manufacturer’s count. A recall covers a build range, so the VIN decides whether one particular vehicle is in it.

Does the R21B4, R21B5 repair cost anything?

No. The manufacturer must remedy a safety defect at no charge for vehicles up to 15 years old from first sale.