Standard Ignition RY-557 Computer Control Relay

Reliable Computer Control Relay for BMW Vehicles

The Standard Ignition RY-557 computer control relay is designed to meet the electrical demands of various BMW models. Engineered for precise performance, this 12-volt relay supports up to 30 amps and features a square connector shape for secure connections.

• Amperage Rating: 30 amps
• Voltage: 12 volts
• Connector Shape: Square
• Terminal Type: 5 male blade terminals
• Continuous Duty: No
• Mounting Bracket: Not included

Technical Details and Specifications

This Standard Ignition computer control relay (part number RY-557) is built with five male blade terminals, ensuring compatibility with the electrical systems of BMW models such as the 318i, 325i, 530i, M3, and M5. The relay is rated for 30 amps and operates at 12 volts, making it suitable for controlling various electrical circuits within these vehicles. Its square connector shape facilitates a secure and stable connection, while the relay is designed for intermittent rather than continuous duty.

Compatible BMW Models and Applications

This relay is compatible with a range of BMW vehicles, including the 318i, 318is, 325e, 325es, 325i, 325is, 325iX, 525i, 525iT, 530i, 535i, 540i, M3, and M5. It is commonly used in electrical, lighting, and body control systems where a computer control relay is required to manage current flow and signal switching.

• Resolves intermittent electrical failures in lighting circuits
• Replaces faulty relays causing power loss to accessories
• Addresses relay-related issues in body control modules
• Prevents relay overheating by matching amperage requirements
• Ensures reliable switching in computer-controlled electrical systems

Installation Notes and Tips

When installing the Standard Ignition RY-557 relay, ensure the vehicle’s ignition is off and the battery is disconnected to prevent electrical shorts. Verify the relay’s terminal configuration matches the original part, noting the five male blade terminals and square connector shape. Since this relay does not include a mounting bracket, secure it properly within the relay panel or designated mounting area to avoid vibration damage.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing dependable performance for BMW electrical systems. The RY-557 relay undergoes rigorous testing to ensure durability and functionality. Please refer to Standard Ignition’s warranty policy for specific coverage details.