Standard Ignition RY-478 Starter Relay

Starter Relay for Lexus and Toyota

Standard Ignition RY-478 is a 12-volt starter relay built for direct electrical switching in the starting circuit. It uses a rectangular female connector with male blade terminals and a push-on mounting style for a clean replacement on select Lexus LX470 and Toyota Land Cruiser applications.

Key Features

• Starter relay function for the starting system
• 12 V electrical rating with 20 A amperage rating
• 4 terminals with blade terminal type
• 1 rectangular connector, female connector gender
• Push-on mounting type with no mounting bracket or hardware included
• Standard Ignition RY-478 replacement part

Detailed Description

Standard Ignition RY-478 is a starter relay used to control current flow in the starting circuit on select 1998-2003 Lexus LX470 and 1998-2002 Toyota Land Cruiser models. The relay is configured with four male blade terminals, a single rectangular female connector, and a 12-volt, 20-amp electrical rating. For buyers searching for a Lexus LX470 starter relay or Toyota Land Cruiser starter relay, RY-478 provides the correct electrical format for the listed applications. This part cross-references Four Seasons 20166 for the same application.

Vehicle Fitment

• Fits 1998-2003 Lexus LX470, N/A
• Fits 1998-2002 Toyota Land Cruiser, N/A

Common Issues This Relay Can Address

• No-crank condition when the starter circuit is not switching properly
• Intermittent starter engagement
• Starter relay electrical failure
• Starting system communication loss between control and starter circuits

Installation Notes and Tips

Confirm the connector shape, terminal count, and terminal gender before installation. Standard Ignition RY-478 uses a push-on mounting style and does not include a mounting bracket or mounting hardware. Verify the vehicle’s original relay layout and electrical rating against the replacement part before connecting it.

Quality Assurance

Standard Ignition supplies electrical replacement parts for starting and charging system service, and this relay is built to match the listed fitment and electrical specifications for the application.