Webasto TSL 17 Coolant Heater
www.webasto.us 6 Webasto Product N.A., Inc.
Startup Sequence / Preheat Sequence with OPTIONAL Timer
To further ensure a warm and comfortable interior temperature, the following preheating and operational sequence is
recommended:
1. Preheat the vehicles engine using ONLY the Webasto heater (Engine Off).
2. Start the vehicles engine.
• DO NOT leave engine idling with all heater fans in the ‘ON’ position. Doing so will decrease the
amount of heat available.
3. Start the driving route, leaving the Webasto heater in the ‘ON’ position.
ATTENTION
The Webasto heater has a start up and shut down procedure that takes several minutes to complete.
Repeatedly turning the Webasto heater on and off will result in a malfunction, and can potentially damage
the heater.
Operating Instructions
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