One of the quieter third-gen years — check the brake recall and the idle-stop coverage.

Two nuisance-to-moderate patterns show up on 2021 cars. The auto idle-stop can struggle to restart the engine after it shuts at a light — Honda's fix is a fuel-injection (PGM-FI) software update, backed by a warranty extension covering the related valve-adjustment and starter repair to 10 years with no mileage limit for 2016–2022 Pilots. Separately, a mechanic reports a rising trend of brake-switch failures on 2021–22 Pilots: the car won't start because it doesn't sense the brake pedal, and the brake lights don't work — a relatively inexpensive repair. Confirm the idle-stop software was applied and check that the brake lights function and the car starts normally.

2021 carries the camera-software recall family — instrument-panel software (20V-439), central-network software (20V-440), and the MOST (Media Oriented Systems Transport — a fiber-optic data network) cable replacement (23V-431) — plus a side-view-mirror recall (23V-174) and a Continental-tire over-cure recall specific to 2021 (20V-725). All are free by VIN. The third-generation transmission behavior is quieter here, but a few owners still report hesitation or failure, so drive through all gears and check the fluid. Test the camera on the drive and confirm the recalls are closed.

The remaining 2021 campaigns are the front-passenger seat-weight-sensor recalls (24V-064 and its 26V-332 expansion), where a cracked sensor can cause an unintended airbag deployment, and the salt-belt rear-subframe-corrosion campaign (26V-365) for cars sold in northern states. Both are free by VIN. Confirm they're closed, especially the subframe recall if the car spent winters in a road-salt state.