Trip computer functions SID 1 / SID 2.

Trip computer functions SID 1 / SID 2.

Ambient Temperature

The current ambient temperature will be shown in the SID display if the Temp function is selected or the temperature warning function is activated. The ambient temperature will then be shown automatically. Information on the ambient temperature comes from the sensor in the front spoiler.

A temperature warning function is built into SID and works as follows:

If the temperature falls from a higher temperature to +3°C (37°F) or rises from a lower temperature to -3°C (26°F), the ambient temperature is automatically shown on the display irrespective of which display SID is set to.

This display remains until another function is selected.

To avoid the effect of radiant heat, the temperature sensor reading is updated differently depending on whether the ambient temperature is rising or falling and it is speed-dependent.

The reading is updated as follows:

•	+1°C (1.8°F) every 6 minutes at speeds below 30 km/h.

•	+1°C (1.8°F) every 30 seconds at speeds above 30 km/h.

•	-1°C (1.8°F) every 2.5 seconds.

If the engine is switched off, the current ambient temperature value is shown in SID. SID also calculates the time for which the engine has been switched off. When the ignition is turned on again, SID shows the stored ambient temperature value from ignition OFF if the time for which the engine has been switched off is:

•	less than 12 minutes.

If the engine has been turned off for more than 12 minutes, the current ambient temperature reading from the sensor is shown.

Information on the ambient temperature is sent as bus information, unit °C/°F (-40 to +50°C), (-40 to 122°F).

D.T.E. (distance to empty)

To calculate how long the car will run with the fuel quantity left in the tank, SID uses information on:

•	Fuel level, unit litres (bus information from MIU).

•	Odometer reading, unit km (bus information from MIU).

•	Fuel consumed since start, unit ml (bus information from engine control module).

•	Coolant temperature, unit °C (bus information from engine control module).

The calculated value is updated every 16 seconds. To avoid rapid changes in the value, no update is carried out when starting from cold or if car speed is below 5 km/h.

When the function is reset, “x x x” km (miles) appears on the SID unit display. The distance then shown (D.T.E) is calculated internally using the value of 1 l/10 km.

Fuel Ø (average fuel consumption)

The average fuel consumption is calculated using the following information:

•	Fuel consumed since start, unit ml (bus information from engine control module).

•	Odometer reading, unit km, miles (bus information from MIU).

The display range is 0 to 99.9 litres/100 km, MPG Imp or MPG.

The calculated value is updated every 4 seconds from the last manual memory reset. Every 500 km, both the distance and the fuel consumption are divided by 2 so that the value is not influenced too much by “old” consumption figures.

On zeroing, both parameters are set to 0, “- - -” appears on the display. When a distance of 100 m has been covered, a new figure will be shown.

Speed Ø (average speed), SID 1

The average speed is calculated using the time information (clock) and the following information:

•	Odometer reading, unit km, miles (bus information from MIU).

•	Speed, km/h, mph (bus information from MIU).

The display range is 0 to 250 km/h (0-155 mph) and the reading is updated every 4 seconds from the previous reset.

On zeroing, all parameters are set to 0, “- - -” km/h (miles/h) appears on the display. When a distance of 100 m has been covered, a new figure will be shown.

Speed Ø (average speed), SID 2

The average speed is calculated in the same way as for SID 1 above.

Calculations in SID 2.

The SID calculates the relationships between Dist, Arriv and Speed Ø. The value of Dist must be greater than 0 for the calculations to be performed.

When an arrival time is then entered under Arriv, the SID displays the calculated average speed. Alternatively, if the desired average speed is entered under Speed Ø, the SID displays the estimated arrival time under Arriv.

If the calculation is made when the car is running, the calculated value is replaced by the correct figure after 10 seconds. If the calculation is made with the car stationary, the calculated value is replaced by the correct figure as soon as the car is driven.