2013 Lexus GS300h fuel pump

851-2. Hybrid system
1
GS450h_300h_OM_OM30D53E_(EE)
For safety and security
There are air intake vents on the
both sides of the rear seatback
for the purpose of cooling the
hybrid battery (traction battery).
If the vents become blocked, the
hybrid battery may overheat,
leading to a reduction in hybrid
battery output.
When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks off the high voltage current and
stops the fuel pump to minimize the risk of electrocution and fuel
leakage. If the emergency shut off system activates, your vehicle
will not restart. To restart the hybrid system, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped
professional.
A message is automatically displayed when a malfunction occurs in
the hybrid system or an improper operation is attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
(P. 838)
Hybrid battery (traction battery) air vents
Emergency shut off system
Hybrid warning message

7886-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
8F/PMP25Multiport fuel injection system/sequen-
tial multiport fuel injection system
9H-LP RH-LO20Right-hand headlight (low beam)*1
10H-LP LH-LO20Left-hand headlight (low beam)*1
11BATT FAN
(HV)*210Hybrid battery (traction battery) cooling
fan system
12ABS MAIN 210Brake system
13ABS MAIN 110Brake system
14IGCT NO.130IGCT NO.2, IGCT NO.3, IGCT NO.4,
IGCT NO.5
15ECU-B7.5VGRS, smart entry & start system
16INV W/P10Hybrid system
17ETCS10Multiport fuel injection system/sequen-
tial multiport fuel injection system
18EPS-B10Electric power steering system
19D/C CUT30DOME, MPX-B
20HORN10Horn
21ODS5No circuit
22TV7.5Remote Touch screen
23P/I-B NO.280IG2 MAIN, EFI MAIN, EDU, F/PMP,
A/F
24ABS NO.230Motor relay
25P/I-B NO.150H-LP HI RH, H-LP HI LH, DRL, emer-
gency brake signal
26H-LP LO30H-LP LO RH, H-LP LO LH
27LH J/B-B40Left-hand junction block
28RH J/B-B40Right-hand junction block
29VGRS40VGRS
30OIL PMP60Oil pump
FuseAmpereCircuit

941
8 8-1. Specifications
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Fuel information
Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that
only accommodates the special nozzle on unleaded fuel pumps.
If your engine knocks
Consult any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
You may occasionally notice light knocking for a short time while acceler-
ating or driving uphill. This is normal and there is no need for concern.
GS300h
EU area:
Your vehicle must use only unleaded gasoline conforming to Euro-
pean standard EN228.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 91 or higher.
Except EU area:
Your vehicle must use only unleaded gasoline.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 91 or higher.
GS450h
EU area:
Your vehicle must use only unleaded gasoline conforming to Euro-
pean standard EN228.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.
Except EU area:
Your vehicle must use only unleaded gasoline.
For optimum engine performance, select unleaded gasoline with a
Research Octane Number of 95 or higher.