DO-IT-YOURSELF MAINTENANCE - Electrical components -> Checking and replacing fuses for Your Toyota Prius 4 Door First Generation (1997-2003)

Auxiliary battery recharging  
precautions  
Checking and replacing fuses  
During recharging, the battery is pro-  
ducing hydrogen gas.  
NOTICE  
Type A  
z Be sure the hybrid system and all  
accessories are off before perform-  
ing maintenance.  
Therefore, before recharging:  
1. If recharging with the battery installed  
on the vehicle, be sure to disconnect  
the ground cable.  
z When checking the battery, remove  
the ground cable from the negative  
terminal (“—” mark) first and rein-  
stall it last.  
2. Make sure the power switch on the  
recharger is off when connecting the  
charger cables to the battery and when  
disconnecting them.  
Good  
Type B  
Blown  
z Be careful not to cause a short cir-  
cuit with tools.  
CAUTION  
z Take care no solution gets into the  
battery when washing it.  
D Always charge the battery in an un-  
confined area. Do not charge the  
battery in a garage or closed room  
where there is not sufficient ventila-  
tion.  
Good  
Blown  
Type C  
D Only do  
a
slow charge (3.5A or  
less). Charging at a quicker rate is  
dangerous. The battery may ex-  
plode, causing personal injuries.  
NOTICE  
Good  
Blown  
Never recharge the battery with the  
hybrid system on. Also, be sure all  
accessories are turned off.  
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Type A fuses can be pulled out by the  
pullout tool. The location of the pullout  
tool is shown in the illustration.  
If the new fuse immediately blows out,  
there is a problem with the electrical sys-  
tem. Have your Toyota dealer correct it as  
soon as possible.  
If you are not sure whether the fuse has  
blown, try replacing the suspected fuse  
with one that you know is good.  
CAUTION  
If the fuse has blown, push a new fuse  
into the clip.  
Never use a fuse with a higher am-  
perage rating, or any other object, in  
place of a fuse. This may cause ex-  
tensive damage and possibly a fire.  
Only install a fuse with the amperage rat-  
ing designated on the fuse box lid.  
If you do not have a spare fuse, in an  
emergency you can pull out the “DOME”  
or “OBDII” fuse, which may be dispens-  
able for normal driving, and use it if its  
amperage rating is the same.  
If the headlights or other electrical  
components do not work, check the  
fuses. If any of the fuses are blown,  
they must be replaced.  
If you cannot use one of the same amper-  
age, use one that is lower, but as close  
as possible to, the rating. If the amperage  
is lower than that specified, the fuse  
might blow out again. but this does not  
indicate anything wrong. Be sure to get  
the correct fuse as soon as possible and  
return the substitute to its original clip.  
See “Fuse locations” on page 201 in Sec-  
tion 81 for locations of the fuses.  
Turn the ignition switch and inoperative  
component off. Pull a suspected fuse  
straight out and check it.  
Determine which fuse may be causing the  
problem. The lid of the fuse box shows  
the name of the circuit for each fuse. See  
page 237 in Section 9 for the functions  
controlled by each circuit.  
It is a good idea to purchase a set of  
spare fuses and keep them in your ve-  
hicle for emergencies.  
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