No-Start / No Crank on Automatic 7MGE - Neutral Safety Switch Contacts

Electricalintermediate✓ OP Confirmed

Problem

Automatic transmission 7MGE Supra would not crank or start when turning the key to START in Park. No click heard from the starter motor solenoid, indicating the solenoid was not pulling in. The starter relay clicked at the ON position but nothing happened at START.

Engine does not crank when key is turned to START in ParkNo click heard or felt from the starter motor solenoidStarter relay clicks at ON position but no engagement at STARTBattery and battery cables are fine

Root Cause

The neutral safety switch mounted on the transmission shift linkage had dried-out factory grease and corroded copper contacts that were no longer making proper contact in the Park position. This prevented the start circuit from completing to the starter solenoid.

Confidence

High confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted August 2024 on SupraForums.com