2004 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS LOCATION

Component Location
ABS Actuator (E168, E169) At left rear of engine compartment, near brake master cylinder. See Figure .
ABS/TCS Control Unit At left rear corner of engine compartment. See Figure .
A/C Auto Amplifier Behind center of dash. See Figure .
Air Bag Diagnosis Sensor Unit Under rear of center console. See Figure .
Audio Unit Behind center of dash. See Figure .
Daytime Light Control Unit (Canada) At right front corner of engine compartment. See Figure .
ECM Behind instrument lower cover. See Figure .
Front Monitor Upper center of dash. See Figure .
Heater Unit Behind instrument lower cover. See Figure .
IVIS IMMU On ignition key cylinder. See Figure .
Left Seat Control Unit Under driver seat. See Figure .
NAVI Control Unit Behind center of dash. See Figure .
Passenger Air Bag Module (149) Right side of dash. See Figure .
Shift Lock Control Unit Below center console. See Figure .
Smart Entrance Control Unit Behind lower center of dash. See Figure .
Transmission Control Module (TCM) Behind lower center of dash. See Figure .
VDC/TCS/ABS Control Unit Under driver seat. See Figure .
Factory Service Tools

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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.