Adjusting the coolant temperature gauge

Fig 1: Identifying Coolant Temperature Gauge - Night Panel

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The coolant temperature gauge scale is divided into 5 fixed "breakpoints ", of which 3 are adjustable.

• Low-temp High: Breakpoint at which the gauge needle leaves the "blue" zone (Factory setting: 50°C).
• Horizontal Low-temp: Breakpoint when the gauge needle is in the horizontal position (factory setting: 80 °C).
• Horizontal High-temp: Breakpoint at which the gauge needle leaves the horizontal position (factor setting: 115°C).
• High-temp Low: Breakpoint at which the gauge needle enters the "red" zone (factory setting: 129°C).

There are two possibilities of adjusting the coolant temperature readings, depending on the fault symptoms:

1. Coolant temperature corresponding to the fixed breakpoints can be adjusted.
2. The horizontal breakpoint (gauge reading with engine at operating temperature) can be moved up or down.

   Adjustment can be checked afterwards by activating Night Panel with the diagnostic tool.