Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Tow Bar Control Module (TBCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: TOWBAR Control Module (TBCM) (G2016302) >> DTC B1549-23: Electrically Deployable Tow Bar Button - Signal stuck low >> Possible Causes