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FCA

Dodge, Jeep & Chrysler

Electrical faults in your Dodge, Jeep, or Chrysler? We repair BCM, TIPM, and engine modules without a full replacement.

FCA diagnostics
Diagnostics

Here's how we diagnose it

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> scanning: dodge, jeep & chrysler...
⚠ fault pattern recognized
> component-level repair probability: high

Dodge, Jeep, and Chrysler platforms run a cluster of body electronics off a handful of modules, and the BCM (Body Control Module) is the one behind most of the "random gremlin" complaints — lights, locks, wipers, and windows all acting up at once, often for no obvious reason. (If your vehicle won't start because the fuel pump isn't getting a signal, that's almost always the TIPM — we cover that failure in detail on its own page; here we're talking about the BCM and the rest of the body electronics.)

Symptom bench

Common symptoms

Pick the symptom to see the likely cause

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Interior or exterior lights that flicker, stay on with the key out, or don't come on at all: the relays and drivers for those outputs live inside the body control module, and when one degrades the command gets stuck on or never arrives.

U0140 and lost BCM communication

On 2014-2021 Jeep Grand Cherokee (WK2) and its Dodge Durango platform-mate, a U0140 ("lost communication with body control module") code is common, and it's often not a dead BCM at all — Chrysler has released software updates through dealers to fix communication glitches between modules, and moisture or corrosion at the BCM connectors in the driver's footwell is just as common a cause. We check both before condemning the module itself.

Why these modules fail

The BCM sits low in the cabin on most of these platforms — often behind a kick panel or under the dash in the driver's footwell — which puts it in the path of water intrusion from a clogged cowl drain, a bad windshield seal, or a flooded floor mat. Corrosion on the board or connector pins produces exactly the kind of scattered, multi-system symptoms owners describe, because a corroded pin doesn't fail cleanly — it fails intermittently, on some circuits and not others. On older Chrysler platforms (Cirrus/Stratus/Breeze, and the 2004-2007 Grand Cherokee/Durango/Charger generation), we still see BCMs with well-documented parasitic-drain behavior, effectively "waking up" overnight and draining the battery.

Our process

  1. Step 01

    Remote diagnostics

    You describe the symptoms and fault codes, and we coordinate module removal

  2. Step 02

    Bench testing

    We isolate whether the fault is a corroded connector pin, a burned driver transistor, or water damage

  3. Step 03

    Component-level repair

    We repair the specific part, without replacing the whole board

  4. Step 04

    Plug & Play delivery

    The module comes back ready to install, with your original programming preserved

Coverage

  • BCM — most Dodge, Jeep, Chrysler, and Ram platforms from the mid-1990s through current production
  • Related body electronics modules (FCM, PDC-integrated logic) depending on platform and year
  • TIPM-specific no-start / fuel pump relay failures — see our dedicated TIPM page for that repair

Electrical faults with no obvious pattern in your Dodge, Jeep, or Chrysler? Tell us the symptoms and we'll set up the BCM diagnosis.

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Repair vs. dealer replacement

The dealer route is usually a full BCM swap plus dealer programming tied to your VIN. We diagnose down to the failed component on the board — often a corroded connector pin, a failed driver transistor, or water damage — and repair it at that level, keeping your existing programming and avoiding the module-replacement cycle that doesn't fix a wiring or water-intrusion problem upstream of the module.

Frequently asked questions

Does the U0140 code always mean the BCM is dead?

No — it's often a software-fixable inter-module communication fault, or corrosion at the connectors. We check both hypotheses before writing off the module.

My vehicle is a European/Asian import with the same FCA platform — do you repair it the same way?

Yes — what matters is the electronic platform, not the market it was sold in.

After the repair, do I need to reprogram the BCM to the VIN?

No — we repair the specific component on the board, preserving your existing programming.

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