Standard Ignition FLS-23 Engine Coolant Level Sensor

Engine Coolant Level Sensor for Jeep Applications

Standard Ignition FLS-23 is an engine coolant level sensor built for accurate coolant monitoring in select Jeep vehicles. It uses a plug-in, female connector with a 2-pin male terminal layout and 12-volt electrical specification for straightforward integration with the original circuit.

Fits 1991-1998 Jeep Grand Cherokee, N/A; Fits 1991-1996 Jeep Cherokee, N/A; Fits 1994-1995 Jeep Wrangler, N/A; Fits 1991 and 1993 Jeep Grand Wagoneer, N/A.

Key Features

• Engine coolant level sensor for monitored coolant reservoir or tank applications
• Standard Ignition FLS-23 part number for direct catalog identification
• Female connector, plug-in style for OE-style electrical connection
• 2-terminal pin design with male terminals
• 12-volt electrical specification
• Built with copper alloy conductors for strong electrical conductivity and reduced resistive loss
• Individually tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition FLS-23 is engineered for Jeep Grand Cherokee, Cherokee, Wrangler, and Grand Wagoneer coolant level monitoring applications. The sensor is constructed with durable materials and copper alloy conductors to support stable signal transfer in demanding underhood conditions. Standard Ignition’s long-running development focus on technician needs is reflected in the sensor’s tested switching performance and service-oriented design.

This part cross-references 5S1457 and CLS6 for the same application. Use FLS-23 when replacing a worn or inaccurate coolant level sensor on compatible Jeep cooling system setups.

Common Problems It Can Help Address

• Coolant level warning light staying on or triggering incorrectly
• Intermittent coolant level signal from a failing sensor
• Electrical connection issues at the coolant reservoir sensor
• Inaccurate coolant level readings in the instrument cluster
• Service concerns caused by degraded sensor switching performance

Installation Notes and Tips

Verify connector style, terminal count, and voltage before installation. Inspect the mating harness and connector pins for corrosion, looseness, or heat damage before connecting the new sensor. Confirm the replacement matches the original coolant level sensor location and electrical interface on the vehicle.

Quality Assurance

Standard Ignition states that this sensor is 100% tested for mechanical and electrical switching performance. The design also uses robust materials and copper alloy conductors to support reliable operation in service environments.