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9-1. Specifications
RX350_U_OM48E90U
*: The coolant capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
Cooling system
Capacity*
Vehicles without towing package
9.5 qt. (9.0 L, 7.9 Imp. qt.)
Vehicles with towing package
10.5 qt. (9.9 L, 8.7 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system (spark plug)
Make DENSO FK20HBR8
Gap 0.03 in. (0.8 mm)
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage at 68F (20C):
12.6 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates 5 A max.
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