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Parts for your 2021 Lexus Is-Batteries
9-33 Volt LED Rear Direction Indicator and Twin Stop Lamps with LED Tail Rings - 94364C
$1,596
$1,197
Member Price
9-33 Volt LED Reverse, Rear Direction Indicator and Stop Lamps with LED Tail Rings - 94365C
$1,655
$1,241.25
Member Price
Explore 4WD & Adventure
Clearance
Narva Crimp Terminal Male Blade Red Terminal Entry 6.3 x 0.8mm Heat Shrinkable 20 Pce - 56320BL
$5
Narva Crimp Terminal Flag Female Blade Brass Terminal Entry 6.3 x 2.1mm Non Insulated 100Pk - 56228
$36
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2021 Lexus IS batteries — what they do and how to look after them
Based on Lexus technical references — including the 2021 Lexus IS Owner’s Manual, Lexus IS300h New Car Features and Repair Manual, and the Lexus Service and Warranty guides for AU/NZ — batteries are absolutely relevant to the 2021 Lexus IS range. Every model uses a 12‑volt auxiliary battery, and the IS300h hybrid additionally carries a high‑voltage traction battery for propulsion and regenerative braking.
In everyday driving, the 12‑volt unit powers the computers, lighting, infotainment, locks and, on non‑hybrid IS models, cranks the engine. In the IS300h, the 12‑volt battery “wakes up” the hybrid system and closes the high‑voltage relays
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