B201CAirbag unit supply voltage out of range

• Volkswagen group code · Airbag (SRS)
• Lights a warning lamp

How the car detects it

The airbag unit sees an unexpected supply voltage. On 2020 Tiguans with a dealer-fitted long-range remote start kit, Volkswagen found a fuse that had to be removed after the installation. While an airbag fault is stored, the affected airbag or pretensioner may not deploy in a crash. Have it repaired before relying on it. Never probe airbag connectors with a meter: that can fire the airbag.

What you may notice

• Airbag warning light

Likely causes

• PossibleBattery or charging problem
• PossibleAccessory installation (remote start kit)
• RareSupply wiring or ground

Sources

• static.nhtsa.gov › MC-10180569-0001.pdf · official document

Backed by an official manufacturer document.

From Obdaryn's Volkswagen group pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.