LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> ES 350 >> Repair and Diagnosis >> Electrical >> Starter >> Starting >> Smart Access System With Push-Button Start >> DTC B2275 STSW Monitor Malfunction >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B2275 STSW Monitor Malfunction: Description

This DTC is output when there is an open, short, or any other problem in the engine start request output circuit inside the main body ECU or in the external circuit.

HINT:

When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

After the main body ECU is replaced, perform the registration procedures for the engine immobilizer system (See REGISTRATION ).

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. DTC Detection Condition Trouble Area
B2275 STSW output circuit (engine starting request signal circuit) inside main body ECU or other related circuit is malfunctioning
  • Main body ECU
  • ECM
  • Wire harness or connector