Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2012IS 250C V6-2.5L (4GR-FSE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTFUEL DELIVERY AND AIR INDUCTIONMAIN RELAY (COMPUTER/FUEL SYSTEM)SERVICE AND REPAIRINSTALLATION
2012 Lexus IS 250C V6-2.5L (4GR-FSE)
Installation
2012 Lexus IS 250C V6-2.5L (4GR-FSE)SECTION Installation
4GR-FSE ENGINE CONTROL: INTEGRATION RELAY: INSTALLATION
1. INSTALL INTEGRATION NO.1 RELAY
(a) Connect the 3 connectors.
(b) Attach the integration relay to the engine room No. 2 relay block.
(c) Install the No. 2 relay block cover.
2. INSTALL ENGINE ROOM SIDE COVER LH Installation
3. INSTALL COOL AIR INTAKE DUCT SEAL Installation
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.