Standard Ignition RY-1752 Computer Control Relay

Computer Control Relay for Mercedes-Benz Applications

Standard Ignition RY-1752 is a 12-volt computer control relay built for electrical system control in select Mercedes-Benz vehicles. It uses a rectangular connector, 9 male pin terminals, and a 10-amp amperage rating for direct-fit service where the original relay has failed or become intermittent.

Compatible With Mercedes-Benz 190E, 300E, 300SE, 300TE, 420SEL, 560SEL, and other listed applications, this relay supports dependable circuit switching in late-1980s and early-1990s Mercedes-Benz electrical systems. The included mounting bracket helps secure the relay in the original location.

Key Features

• Standard Ignition RY-1752 computer control relay
• 12-volt relay with 10-amp amperage rating
• Rectangular connector shape for OE-style fitment
• 9 male pin terminals with pin-type connection
• Mounting bracket included
• Fits select Mercedes-Benz electrical applications

Detailed Description

Standard Ignition RY-1752 is a replacement computer control relay for vehicles that rely on a multi-terminal relay to manage electrical switching functions. The 12-volt design, rectangular connector, and 9-pin male terminal layout match the requirements of the listed Mercedes-Benz applications, including 1986-1993 Mercedes-Benz 190E and 1988-1992 Mercedes-Benz 300E. This part number, RY-1752, is also referenced for 1990-1993 Mercedes-Benz 500SL and other compatible models in the fitment list.

This part cross-references Genuine 2015403745 for the same application. It also interchanges with AR7256 and R7255.

Common Issues This Relay May Address

• Intermittent electrical relay operation
• No-start or hard-start conditions tied to relay failure
• Inconsistent computer-controlled circuit switching
• Electrical accessories or systems losing power unexpectedly
• Heat- or age-related relay contact wear

Installation Notes and Tips

Verify the connector shape, terminal count, and mounting location before installation. Compare the original relay to Standard Ignition RY-1752 to confirm the 9-pin male terminal layout and bracket style match the vehicle’s factory setup. For best results, inspect the connector for corrosion, loose terminals, or heat damage before installing the replacement relay.

Quality Assurance

Standard Ignition supplies electrical replacement parts for service applications where OE-style fit and terminal configuration matter. RY-1752 is specified for direct replacement use in the listed Mercedes-Benz models, including 1988-1992 Mercedes-Benz 300CE and 1988-1991 Mercedes-Benz 560SEL.