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Speedometer; Tachometer; Odometer; Trip odometer; Oil pressure gauge; Coolant Temperature gauge; Battery/Charging system lamp; Low oil pressure lamp; Airbag lamp; Coolant overheat lamp; Hand-brake lamp; Door ajar lamp; High beam lamp; On-board diagnosis indicator/Check engine lamp; Fuel gauge; Low fuel lamp; Hand brake indicator; Turn light ...
An electronic odometer (below speedometer) with digital display showing 91,308 miles (146,946 km) from a Jeep Grand Cherokee (WJ) An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two (electromechanical).
The most common wheel speed sensor system consists of a ferromagnetic toothed reluctor ring and a sensor (which can be passive or active).. The tone wheel is typically made of steel and may be an open-air design, or sealed (as in the case of unitized bearing assemblies).
A small permanent magnet affixed to the speedometer cable interacts with a small aluminium cup (called a speedcup) attached to the shaft of the pointer on the analogue speedometer instrument. As the magnet rotates near the cup, the changing magnetic field produces eddy current in the cup, which itself produces another magnetic field.
Vehicle OBD tracking systems make use of OBD GPS trackers that plug into the onboard diagnostic (OBD) port of light, medium, or heavy-duty vehicle. A cellular OBD GPS tracker directly communicates with the cell tower for sending the location and other vehicle performance data to the server over the cellular wireless network.
This can occur if the position of the radar is too close to a larger reflective target such as a tractor trailer. To help alleviate this the use of secondary speed inputs from the vehicle's CAN bus, VSS signal, or the use of a GPS-measured speed can help to reduce errors by giving a secondary speed to compare the measured speed against.
Cruise control unit in the speedometer-cable and vacuum valve Cruise control throttle servo. The driver must manually bring the vehicle up to speed and use a button to set the cruise control to the current speed.
SID on a 2001 Saab 9-5 suffering from pixel failure. SID-2 in a 1995 Saab 900SE, showing check warning and some pixel failure. Saab Information Displays from 1994–2003 commonly suffer from an electrical system failure that results in some or all of the on-screen liquid crystal display (LCD) pixel lines becoming invisible, rendering the SID difficult to read or, in some cases, entirely unusable.