BMW options & electronic systems |
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| There are 2 entries in the glossary. |
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| TDI | | Tyre Defect Indicator |
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 | The Tyre Defect Indicator (TDI) monitors the air pressure in the tyres at all road speeds. This system is therefore able to detect a possible loss of air by checking the wheels' speed of rotation. Since the roll radius of the tyres alters as pressure decreases, the wheel rotation speed changes accordingly and is measured precisely by the Anti-Lock Braking System (ABS) sensors on the wheels. A warning light in the instrument panel and a warning signal alert the driver in the event of a loss of pressure. |
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| TSC | | Trailer Stability Control |
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 | The trailer stabilisation control in the BMW X3 and X5 is an innovative safety system that recognises the presence of a trailer as soon as the trailer plug is inserted into the power socket at the rear. The trailer stability control is integrated in the Dynamic Stability Control (DSC) and uses DSC sensors to monitor the yaw rate (rotation around the vertical axis) of the vehicle. If the sensors identify behaviour that is typically associated with a swaying motion, the engine output is cut and all four wheels are braked automatically. The trailer's motion soon returns to normal thanks to the system's fast response. |
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Glossary V2.0 |
