1994 Lexus LS 400FACTORY OEM SERVICE PROCEDURE

Brake System

CAUTION: If vehicle is equipped with air suspension, turn air suspension switch off before lifting vehicle. Air suspension switch is located inside trunk, on left side.
  1. Ensure brake master cylinder reservoir is full. Bleed master cylinder first. Then, connect hose to wheel cylinder bleed screw and insert other end of hose in a clear container 1/4 full of clean brake fluid. Start on wheel with longest hydraulic line, and work toward wheel with shortest hydraulic line.
  2. Slowly pump brake pedal several times. While holding brake pedal down, loosen bleed screw until fluid starts to flow out, and then close bleed screw. Repeat operation until no bubbles are present in fluid. Tighten bleed screw to 74 INCH lbs. (8.3 N.m). See BRAKELINE BLEEDING SEQUENCE table.
BRAKELINE BLEEDING SEQUENCE

Application Sequence
All Models RR, LR, RF & LF
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.

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