LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2003 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 856 (Security Control System (With Intelligent Key System)) >> DTC/Circuit Diagnosis >> DTC B2552: Intelligent Key >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. REPLACE INTELLIGENT KEY UNIT 
    1. Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION ".
    2. Perform initialization with CONSULT. Re-register all mechanical keys. Refer to CONSULT Immobilizer mode and follow the on-screen instructions.
    3. Start the engine.

      Does the engine start? 

      YES: Inspection End.

      NO: Perform "DTC confirmation procedure". Refer to "DTC LOGIC ".

scientia non olet · About LEMON Manuals