TACHOMETER The tachometer is essentially a gauge that can display an engine's revolutions per minute (rpm or revs). Traction Control System TCS Developed to minimize wheel slippage through turns and low grip surfaces, Traction Control works by using the ABS wheel sensors to detect if any of the wheels is spinning uncontrollably and individually brake it or even reduce engine power until the grip is restored. Turbo Diesel direct Injection TDI TDI is Volkswagen's AG trademarked moniker for their Turbo Diesel direct Injection engines. While in the beginning they were all direct injection engines, now common rail ones also bear the same name in the VAG group. TELEAID The TELEAID is a Mercedes-Benz optional feature based on a built-in telephone. Essentially, it can emit an automatic distress call to alert emergency services in the case of an accident. Depending on the type of accident or vehicle, th