Page 397 of 636
3976-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
6
Maintenance and care
RC350/RC300 AWD
Engine compartment
Fuse boxes (P. 429)
Battery ( P. 408)
Engine oil level dipstick (P. 400)
Engine coolant reservoir (P. 404)
Engine oil filler cap ( P. 402) Brake fluid reservoir (
P. 407)
Washer fluid tank ( P. 411)
Electric cooling fans
Condenser ( P. 406)
Radiator ( P. 406)1
2
3
4
5
6
7
8
9
10
Page 398 of 636
3986-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
RC300
Fuse boxes (P. 429)
Battery ( P. 408)
Engine oil level dipstick (P. 400)
Engine oil filler cap ( P. 402)
Engine coolant reservoir (P. 404)
Brake fluid reservoir ( P. 407)Washer fluid tank (
P. 411)
Electric cooling fans
Condenser ( P. 406)
Intercooler radiator ( P. 406)
Radiator ( P. 406)
Intercooler coolant reservoir ( P. 404)1
2
3
4
5
6
7
8
9
10
11
12
Page 399 of 636
3996-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
6
Maintenance and care
RC F
Fuse boxes (P. 429)
Battery ( P. 408)
Engine oil level dipstick (P. 400)
Engine coolant reservoir (P. 404)
Engine oil filler cap ( P. 402) Brake fluid reservoir (
P. 407)
Washer fluid tank ( P. 411)
Electric cooling fans
Condenser ( P. 406)
Radiator ( P. 406)1
2
3
4
5
6
7
8
9
10
Page 429 of 636
4296-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
6
Maintenance and care
Turn the engine switch off.
Open the Fuse box cover.
Engine compartment: type A fuse box
Push the tab in and lift the lid off.
Engine compartment: type B fuse box
Push the tab in and lift the lid off.
Driver’s side instrument panel
Remove the lid.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and repl ace the fuses as necessary.
1
2
Page 430 of 636
4306-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
Remove the fuse with the pullout
tool.
Only type A fuses can be removed
using the pullout tool.
Check if the fuse is blown.
Normal fuse
Blown fuse
Type A and B:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type C and D:
Contact your Lexus dealer.
3
4
1
2
Type AType B
Type CType D
Page 431 of 636

4316-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
6
Maintenance and care
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. (P. 432)
●If the replaced fuse blows again, have th e vehicle inspected by your Lexus dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle.
Because certain bulbs are connected to circui ts designed to prevent overload, non-gen-
uine parts or parts not designed for this vehicle may be unusable.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to th e vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than that indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus dealer as
soon as possible.