Standard Ignition SLS-527 Brake Light Switch

Brake Light Switch for Toyota and Lexus

Standard Ignition SLS-527 is a 12-volt brake light switch with a 7-terminal layout, rectangular single-connector design, and push-in attachment method. It is built with a plastic housing, female connector, male pin terminals, and no included harness or mounting bracket.

Compatible With 2012-2020 Toyota Prius C, 2014-2020 Toyota 4Runner, 2016-2020 Toyota Mirai, and 2014-2018 Lexus CT200h applications listed below. The Standard Ignition SLS-527 is a direct-fit electrical switch for vehicles that require the specified 7-pin configuration.

Key Features

• Brake light switch for 12-volt vehicle electrical systems
• 7 terminal quantity with male pin terminals
• 1 rectangular female connector
• Push-in attachment method for direct mounting
• Plastic construction for under-dash switch applications
• Cross-reference part numbers include S42031 and SL1077

Detailed Description

The Standard Ignition SLS-527 is a brake light switch used in the brake pedal circuit to signal stop-lamp operation and related vehicle control functions. Its 7-terminal, rectangular connector design and push-in mounting style make it a fitment-specific replacement for select Toyota and Lexus models, including Toyota 4Runner, Toyota Prius C, Toyota Mirai, and Lexus CT200h applications. Standard Ignition SLS-527 is specified with a female connector, male pin terminals, and no separate harness or bracket.

This part cross-references S42031 and SL1077 for the same application.

What It Helps Fix

• Brake lamps that do not illuminate when the pedal is pressed
• Intermittent stop-light operation
• Brake switch circuit faults related to the pedal switch
• Cracked or worn switch housings at the pedal assembly
• Electrical connection issues at the brake switch connector

Installation Notes and Tips

• Verify the vehicle uses the 7-pin configuration before ordering.
• Match the connector shape, terminal count, and attachment style to the original switch.
• Inspect the brake pedal area and connector terminals for wear, corrosion, or damage before installation.
• Confirm proper brake lamp operation after installation and check for related warning lights or stored codes if equipped.

Quality Assurance

Standard Ignition SLS-527 is built as an OE-style electrical replacement for the listed Toyota and Lexus applications, with fitment defined by connector type, terminal layout, and mounting style.