2014-2018 Mazda 3 4 Door If Trouble Arises -> Overheating User Manual
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If Trouble Arises -> Overheating for Your Mazda 3 4 Door Third Generation (2014-2018)

If Trouble Arises  
Overheating  
If the High engine coolant temperature  
warning light illuminates:  
Overheating  
If the High engine coolant temperature  
warning light illuminates, the vehicle loses  
power, or you hear a loud knocking or  
pinging noise, the engine is probably too  
hot.  
1. Drive safely to the side of the road and  
park off the right-of-way.  
2. Put a vehicle with an automatic  
transaxle in park (P), a manual  
transaxle in neutral.  
WARNING  
3. Apply the parking brake.  
4. Turn off the air conditioner.  
5. Check whether coolant or steam is  
escaping from the engine compartment.  
Switch the ignition to oꢀ and make  
sure the fan is not running before  
attempting to work near the cooling  
fan:  
If steam is coming from the engine  
compartment:  
Working near the cooling fan when it  
is running is dangerous. The fan could  
continue running indeꢀnitely even if  
the engine has stopped and the engine  
compartment temperature is high. You  
could be hit by the fan and seriously  
injured.  
Do not go near the front of the vehicle.  
Stop the engine.  
Wait until the steam dissipates, then  
open the hood and start the engine.  
If neither coolant nor steam is  
escaping:  
Open the hood and idle the engine until  
it cools.  
Do not remove either cooling  
system cap when the engine and  
radiator are hot:  
CAUTION  
If the cooling fan does not operate  
while the engine is running, the engine  
temperature will increase. Stop the  
engine and call an Authorized Mazda  
Dealer.  
When the engine and radiator are hot,  
scalding coolant and steam may shoot  
out under pressure and cause serious  
injury.  
6. Make sure the cooling fan is operating,  
then turn off the engine after the  
temperature has decreased.  
7. When cool, check the coolant level.  
If it is low, look for coolant leaks from  
the radiator and hoses.  
Open the hood ONLY after steam is no  
longer escaping from the engine:  
Steam from an overheated engine is  
dangerous. The escaping steam could  
seriously burn you.  
719  
If Trouble Arises  
Overheating  
If you find a leak or other damage, or if  
coolant is still leaking:  
Stop the engine and call an Authorized  
Mazda Dealer.  
Cooling system cap  
Coolant reservoir  
Cooling fan  
If you find no problems, the engine is  
cool, and no leaks are obvious:  
Carefully add coolant as required (page  
6-29).  
CAUTION  
If the engine continues to overheat or  
frequently overheats, have the cooling  
system inspected. The engine could be  
seriously damaged unless repairs are  
made. Consult an Authorized Mazda  
Dealer.  
720  

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