Adjusting the coolant temperature gauge

Fig 1: Identifying Temperature Variation

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: