1998 Dodge Durango Body Control Module: Solving Electrical Gremlins

Symptoms of a Failing 1998 Durango BCM

When the Body Control Module begins to fail, it can cause a wide range of strange and seemingly unrelated electrical problems. 🎬 Watch: Common symptoms of a failing BCM Because the BCM controls so many different systems, you might notice one or more of the following issues:

• Keyless Entry Fails: The remote key fob stops locking or unlocking the doors, or works only intermittently.
• Power Locks Act Erratically: Power door locks may not work from the switches inside the vehicle, or they might lock and unlock on their own.
• Interior/Exterior Light Problems: Courtesy lights may not turn on when a door is opened, or they might stay on and drain the battery. Headlights might flicker or turn off while driving.
• Alarm System Malfunctions: The factory alarm may go off for no reason or may not arm/disarm correctly.
• Intermittent Wipers Don't Work: The delay function for the windshield wipers may stop working.
• Warning Chimes Fail: The chimes for 'key in ignition' or 'headlights on' may no longer sound.
• Parasitic Battery Drain: A faulty BCM can fail to go into "sleep mode," causing a slow drain on the battery that kills it overnight.

In most cases, a failing BCM will not cause a check engine light. Diagnostic trouble codes related to the BCM are typically "U" (communication) or "B" (body) codes, which require a more advanced scanner to read than a basic OBD-II code reader.

Buying a Used 1998 Durango Body Control Module

Because this module is specific to the options on the vehicle (like keyless entry), using a module with a different part number will likely result in some features not working. When purchasing a used BCM:

• Verify the Part Number: Physically inspect the used part to ensure the number is an exact match. The primary OEM part number is 56021385AB. The prefix 'P' (P56021385AB) may also be present, indicating a Mopar service part, which is interchangeable.
• Inspect for Damage: Check the module and its connectors for any signs of water damage, corrosion on the pins, or physical cracks in the casing. Water leaks from the windshield or A/C system can sometimes damage these modules.
• Choose a Reputable Seller: Buy from a seller who offers a warranty and has good reviews. This gives you recourse if the part is defective.

Programming, Installation, and Anti-Theft

Does this module need to be programmed?

No. For the 1998 model year Durango, the Body Control Module is a plug-and-play part. It does not need to be programmed by a dealer or locksmith. As long as you match the part number exactly, you can swap the module yourself. This is a major advantage of using a recycled OEM part for this specific vehicle.

Is there an anti-theft link?

The BCM itself is not the primary anti-theft module that prevents the engine from starting. Some Chrysler vehicles of this era began using an optional Sentry Key Immobilizer Module (SKIM) 🎬 Watch: How the Chrysler SKIM system works, which reads a chip in the key. However, a failure of the BCM on a 1998 Durango will typically not prevent the engine from starting and running. It may cause the alarm to act up, but it won't immobilize the vehicle.

Replacement Procedure

Replacing the BCM is a straightforward job that most DIY mechanics can handle in under an hour.

1. Disconnect the Battery: Always disconnect the negative battery terminal before working on any vehicle electronics.
2. Locate the Module: The BCM is located behind the passenger side kick panel, to the right of the glove box, near the air vent.
🎬 Watch: Step-by-step Durango BCM replacement walkthrough
3. Remove the Kick Panel: You will need to remove the plastic kick panel and possibly the glove box to gain access.
4. Unplug and Unbolt: Carefully disconnect the electrical connectors from the module. There may be several plugs. Then, unbolt the module from its bracket.
5. Install the Replacement: Bolt the new module in place, reconnect all electrical plugs, and reassemble the trim panels.
6. Reconnect Battery and Test: Reconnect the negative battery terminal and test all functions (lights, locks, wipers, key fob) to ensure the replacement module has fixed the problem.

Cost Comparison

Known Issues, TSBs, and Recalls

As of this writing, there are no specific recalls or Technical Service Bulletins (TSBs) from the NHTSA that directly address the Body Control Module for the 1998 Dodge Durango. However, owners on forums frequently report the electrical issues described in the symptoms section, which are often traced back to a failing BCM/CTM. Water intrusion from a leaking windshield or A/C system is a known cause of failure for electronics located in the kick panel area.

Frequently Asked Questions (FAQ)