Introduction
The Saab 900 (NG), 9-3, and 9-5 all have Saab's SID (Saab Information Display) units. These are
the On-Board Computers which display various information, from your Fuel Economy and Miles of Petrol
left in your fuel tank, to the Radio Station you're listening to.
Note: If you transfer an SID unit from a hard top into a convertible, the SID will need
to be TECH3 reprogrammed so that convertible-related messages are displayed (e.g. CHECK LATCHES, and
the beep when putting the hood up/down is complete)
NG 900 SID 1
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This is a very basic unit, with the following functions:
- Analogue Clock
- Outside Temperature
- Light Sensor
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If you are looking to replace your current SID 1 unit, you can only replace it with another SID 1 -
you cannot upgrade to an SID 2 or 3 units as they require sensors which will not be fitted to your car.
NG 900 SID 2
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This is a significant upgrade from the SID 1 unit, with the following functions:
- Analogue Clock
- Light Sensor
- Radio/Tape/CD Information Display
- Outside Temperature
- Fuel Economy
- Miles To Empty (how far you can drive with the remaining petrol at your current consumption)
- Diagnostic Messages
- Black Panel button
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You can identify the SID 2 unit as it has 3 large buttons on the front; Info, Clear and Black
Panel.
Should you wish to upgrade your SID 2 unit to the SID 3 unit, this is a straight swap, as
all of the required sensors are already in place.
NG 900 SID 3
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This is a further upgrade from the SID 2 unit, with the following functions:
- Analogue Clock
- Light Sensor
- Radio/Tape/CD Information Display
- Outside Temperature
- Fuel Economy
- Miles To Empty (how far you can drive with the remaining petrol at your current consumption)
- Diagnostic Messages
- Advanced Trip Computer
- Black Panel button
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