68157545AB | Genuine Mopar® ABS AntiLock Brake Module Dodge/Chrysler

An ABS Anti-Lock Brake Module 68157545AB is the electronic control unit that manages the Anti-lock Braking System (ABS) in a vehicle. It monitors wheel speed and controls brake pressure to prevent the wheels from locking up during braking.

General Specifications

Fitment

Fitment can vary by engine build and options. Match the part number on the part you are replacing, or contact us with your vehicle details before ordering.

Purpose & Function

• Prevent Wheel Lock-Up

  • During hard braking or slippery conditions, the ABS module modulates brake pressure to prevent the wheels from locking.

  • Locked wheels reduce traction and steering control, so ABS helps maintain directional control.

• Maintain Steering Control

  • By preventing wheel lock-up, the ABS allows the driver to continue steering while braking, which can help avoid obstacles.

• Optimize Braking Efficiency

  • The module rapidly pulses the brakes (often multiple times per second) to maximize stopping power without losing traction.

• Integrate With Other Vehicle Safety Systems

  • ABS modules often work with Electronic Stability Control (ESC), Traction Control System (TCS), and Brake Assist, providing coordinated control during emergencies.

• Monitor Wheel Speed and Brake Performance

  • The ABS module receives data from wheel speed sensors to detect traction loss and adjust brake pressure accordingly.

Signs of a Bad ABS AntiLock Brake Module

1. ABS Warning Light On

• The ABS warning light on your dashboard stays on or flashes while driving.

• This is the most obvious sign the module or system has a problem.

2. Brake Pedal Issues

• Brake pedal may feel spongy, stiff, or unresponsive.

• ABS might engage unnecessarily or fail to engage during hard braking.

3. Wheel Locking During Braking

• If wheels lock up under hard braking, the ABS is not modulating brake pressure correctly.

• Can be especially noticeable on slippery roads.

4. Unusual Brake Behavior

• Brakes pulsating when not needed or not pulsating during emergencies.

• Braking may feel uneven or jerky.

5. Inconsistent ABS Function

• Traction control or stability control warning lights may come on (since these systems often rely on the ABS module).

• ABS might work intermittently — sometimes it works, sometimes it doesn’t.

6. Failed Diagnostic Test

• Using a scan tool can show ABS module errors or communication failures with wheel speed sensors.

About Mopar

Mopar is the official parts, service, and customer care brand for Chrysler, Dodge, Jeep, Ram, and Fiat vehicles. Originally short for “Motor Parts”, Mopar was established in 1937 and is now a global brand under Stellantis.

Mopar supplies genuine OEM parts, accessories, and performance upgrades, and it supports dealerships and technicians with tools, diagnostics, and factory-backed service. Known especially among enthusiasts for its muscle car heritage, Mopar is also a major presence in motorsports and custom vehicle culture.