Standard Ignition SLS637 Brake Light Switch

Brake Light Switch for INFINITI Q50 and Q60

Standard Ignition SLS637 is a brake light switch built for direct-fit service on select INFINITI models. It uses a 4-terminal, blade-style electrical connection with a female connector and male terminals for a secure snap-fit installation.

Compatible With 2018-2022 INFINITI Q50 and 2018-2021 INFINITI Q60 applications, this brake light switch supports reliable brake pedal signal input for the vehicle lighting and control system. Standard Ignition SLS637 is a practical replacement when the original switch shows electrical or mechanical wear.

Key Features

• Brake light switch for electrical and body system repair
• 4-terminal design with blade terminals
• Female connector with male terminal interface
• Snap-fit attachment method for direct mounting
• Plastic construction with white finish
• Fits 2019-2022 INFINITI Q50 and 2019-2021 INFINITI Q60
• Also fits 2018 INFINITI Q50 and Q60 from 4/2018

Detailed Description

Standard Ignition SLS637 is a brake light switch engineered for vehicles that rely on a precise pedal-position signal to activate the brake lamps and related electrical functions. The plastic housing, snap-fit attachment, and 4-terminal blade connection support a clean OE-style replacement for service work on INFINITI Q50 and INFINITI Q60 models. If you are replacing a worn or inconsistent brake pedal switch, Standard Ignition SLS637 provides the correct form factor for the listed applications.

This part cross-references 253206HL0A and SL1189 for the same application.

What It Helps Solve

• Brake lights that stay on or do not illuminate correctly
• Intermittent brake pedal signal to the vehicle electrical system
• Faults caused by a worn internal switch mechanism
• Connector or terminal mismatch during brake switch replacement
• Service issues on INFINITI Q50 and Q60 brake light circuits

Installation Notes and Tips

Verify the connector style, terminal count, and mounting style before installation. This switch uses a snap-fit attachment and does not include mounting hardware. Confirm the vehicle build date for 2018 applications, since fitment begins from 4/2018 on the INFINITI Q50 and Q60.

Quality Assurance

Standard Ignition supplies replacement electrical components for automotive repair, and SLS637 is built to match the listed fitment and connection requirements for service use.