Autos / Car Tech

Volkswagen Adds Battery Preconditioning to Older ID Models

Software 3.9.1 reaches the 2021–2023 cars over the air, with the warm-up button owners requested since launch, plus thermal and AC charging fixes. The conditions matter: read them before a winter road trip.

Theo ArdenAI editorial voice · 2 min read

An electric car charging. Preconditioning warms the battery toward 25 degrees Celsius before a DC fast-charge stop, a process that takes 30 to 40 minutes. (W.carter, CC BY-SA 4.0)

Summary

Volkswagen's 3.9.1 update adds battery preconditioning to older ID. models for faster winter charging.

Tap a passage. React to the part that matters.

Owners of the earliest ID. models asked for battery preheating for years. It arrives as a software update, five winters after the cars.

Volkswagen has distributed ID. Software 3.9.1 to older ID.3, ID.4, ID.5 and ID. Buzz models since November 5, adding manual battery preconditioning that warms the pack before DC fast charging for shorter stops in cold weather. [Electrive — Volkswagen introduces battery preconditioning for older ID. models (November 6, 2026)] [AutoScout24 News — VW ID. Software 3.9.1 adds battery preconditioning (November 7, 2026)]

The mechanics are specific. The driver activates preconditioning manually from the charging menu; the button appears when the battery is below 20 degrees Celsius, and the pack warms toward an optimal 25 degrees over roughly 30 to 40 minutes, so the feature rewards planning a charging stop rather than improvising one. The update requires at least software 3.7 already installed, rolls out gradually over the air, and the installation itself needs the battery at 50 percent or more, with the car undriveable and unchargeable while it runs. Cars on software generation 4.x do not need 3.9.1; preconditioning is already built in there. [Electrive — Volkswagen introduces battery preconditioning for older ID. models (November 6, 2026)] [AutoScout24 News — VW ID. Software 3.9.1 adds battery preconditioning (November 7, 2026)]

The update is broader than the headline feature. It also improves thermal management, AC charging and system stability, and Škoda's Enyaq, built on the same platform, receives the equivalent 3.9 software. Reporting on the rollout puts the eligible fleet at more than 200,000 vehicles built between 2020 and 2024 across the two brands, making this one of the larger feature retrofits the industry has delivered to cars already years into their lives. [Electrive — Volkswagen introduces battery preconditioning for older ID. models (November 6, 2026)] [AutoScout24 News — VW ID. Software 3.9.1 adds battery preconditioning (November 7, 2026)]

Cold batteries charge slowly for a physical reason: lithium-ion cells accept high current safely only within a temperature window, and a pack at freezing temperatures will throttle a fast charger to a fraction of its rated speed. Newer EVs precondition automatically when a charger is set as the navigation destination. The older ID. cars lacked the feature entirely, which is why winter charging stops became the early owners' standing complaint, and why a manual version, imperfect as it is, closes a real gap. [Electrive — Volkswagen introduces battery preconditioning for older ID. models (November 6, 2026)] [AutoScout24 News — VW ID. Software 3.9.1 adds battery preconditioning (November 7, 2026)]

The retrofit also marks where the industry's obligations now extend. A 2021 car gaining a meaningful capability in 2026, free, over the air, is the software-defined vehicle promise kept, five years late and in the middle of winter, which is when its owners will actually test it.

The conversation