A reported Bluetooth vulnerability in dealer-installed KARR and SWDS vehicle security devices could leave around 2.2 million cars exposed to unauthorised access, potentially increasing theft risks. The issue matters because the devices are aftermarket hardware fitted by dealerships, meaning owners may not realise their vehicles contain them or that they could present a security weakness.

KARR and SWDS are associated with Southwest Dealer Services and are not codes found in a car’s settings. The devices are generally located beneath the driver-side dashboard, and some vehicles may also carry a KARR or SWDS sticker on the driver-side window; the article advises owners to check whether such hardware is installed.