If the High Coolant Temperature Indicator Lights
170 Taking Care of the Unexpected
If the High Coolant Temperature Indicator Lights
Normally, the temperature of the coolant in the
cooling system will rise to a level about midway
between cold and boiling. Hot weather may cause
the temperature to rise higher than normal. So will
temporary stress such as climbing a hill. If you’re
stuck in stop-and-go traffic, the temperature may
climb some, but the radiator fan is designed to
prevent overheating. Be aware of these variations.
If the high coolant temperature indicator (page 9)
comes on for no apparent reason, pull safely to the
side of the road. If possible, park in a shady area.
NOTICE
Continuing to ride with an overheated engine can
cause serious engine damage.
• A steaming engine indicates a coolant leak.
Shut the engine off and wait until the steaming
stops. Look for a leak, but don’t touch the
engine or radiator system. Let everything cool
off first.
• If there’s no obvious problem, leave the engine
on so the fan and coolant circulating system
can continue working. Monitor the high
coolant temperature indicator. The indicator
may turn off after a brief stop with no load on
the engine.
• Check the radiator fan.
If the fan is not working, turn the engine off.
Open the fuse box (page 172) and check the
radiator fan fuse. If the fuse is blown, replace it
with the proper (same rating) spare fuse. Start
the engine. If the high coolant temperature
indicator comes on and stays on, turn the
engine off.
If the radiator fan is working, visually check
the coolant level in the reserve tank. It isn’t
necessary to touch the radiator system.
• If the reserve tank is low or empty, don’t ride
without adding coolant (page 72). After adding
coolant, turn the engine on and check the high
coolant temperature indicator.
If the indicator doesn’t turn off, do not ride.
The engine needs repair. Transport your
motorcycle to your dealer (page 158).
If the temperature drops to normal, check the
coolant level. If it has gone down, add more
coolant.
If you are able to resume riding, continue to
monitor the high coolant temperature indicator
frequently.
If there’s a mild coolant leak, you can ride for
awhile, carefully watching the high coolant
temperature indicator. Be prepared to stop and add
more coolant or water. If the leak is bad, transport
your motorcycle to your dealer (page 158).
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