See also:

Gross Vehicle Weight (GVW) and Gross Vehicle Weight Rating (GVWR)
Gross Vehicle Weight The Gross Vehicle Weight (GVW) must never exceed the Gross Vehicle Weight Rating (GVWR). Gross Vehicle Weight (GVW) is the combined total of the weight of the vehicle, dri ...

When checking or servicing in the engine compartment while the engine is running
A running engine can be dangerous. Keep your fingers, hands, clothing, hair and tools away from the cooling fan, belts and any other moving engine parts. Removing rings, watches and ties is advis ...

If the light illuminates constantly
If the light illuminates constantly while driving or does not turn off after the engine starts, an emission control system malfunction has been detected. You should have your vehicle checked by an ...