Quick Answer: How Do I Test My Body Control Module?

What happens when engine control module goes bad?

Engine Stalling or Misfiring Erratic engine behavior is another common symptom of a bad or failing ECM.

A faulty computer can also be responsible for engine stalling or misfiring, though this tends to be more intermittent.

These symptoms may come and go, and may appear to have no pattern to their severity or frequency..

What causes a body control module to go bad?

Water, vibration, heat and age can all contribute to a module failing, which, depending on the placement of the unit in your vehicle, can be difficult to avoid. To keep your new BCM in the best shape possible, make sure it stays clean and dry, and protect it from unwanted shaking or excessive heat if at all possible.

How much does it cost to replace BCM?

The average cost for a body control module replacement is between $501 and $532. Labor costs are estimated between $78 and $100 while parts are priced between $423 and $432. Estimate does not include taxes and fees.

Will a bad BCM drain a battery?

A fault with the body control module can leave electrical components turned on when they should be turned off. This can drain the battery when the engine is turned off or if the vehicle is left parked overnight.

Can BCM keep car from starting?

In a short answer: Yes, the BCM can prevent a car from starting, and doubly so when you introduce a security/antitheft system like Passlock. The reason is that the BCM feeds inputs into the Passlock (or other security system) for it to ‘determine’ if it is being stolen or hotwired.

Where is the body control module?

The body control module location can differ from one car to another but, in most cases, you can locate the BCM under the dashboard. Check your firewall and look into the right side of the steering wheel column to find it.

What is a body control module fuse?

The automotive central body control module (BCM) is a processor-based power distribution center that supervises and controls functions related to the car body such as lights, windows, security, door locks and access control, and various comfort controls.

How do I know if my BCM is bad?

Symptoms of a Misfiring BCM High speed shake. If the car becomes a bit unstable or misfires when you drive it at high speeds, the BCM might not be communicating and synchronizing different systems of the car. Bad acceleration. If your acceleration isn’t smooth, you could also be experiencing BCM failure.

What does a body control module do?

In automotive electronics, body control module or ‘body computer’ is a generic term for an electronic control unit responsible for monitoring and controlling various electronic accessories in a vehicle’s body.

How do you replace a body control module?

How to Replace a Body Control ModuleDisconnect the negative terminal on the battery with a wrench or ratchet.Locate the body control module. … Remove the glove box or center console by removing the Phillips-head screws and bolts holding it in place.Use a ratchet to pull out the bolts holding the body control module in place.More items…

Can BCM be repaired?

When the body control module stops working, the other connected modules have also stopped working. Thus, it will require you to go for repair or possible replacement for a new system.

Can you reset a body control module?

The BCM is the central unit of a car just like CPU in your personal computers. … If the central system is not working properly, a professional will perform a Body Control Module reset to make things perfect again.

What happens if PCM goes bad?

A failed PCM or TCM can cause the car to get stuck in gear, which can be a serious safety issue. It can also lead to costly transmission damage.

How long does it take to replace BCM?

It could be a relatively quick fix, taking a little over an hour and running under $300, or it could take hours and cost hundreds more. In some cases, it’s just the module that need not be replaced. This can be relatively simple to take out, if it is behind the glove box, as it is in most cars.

What is the difference between ECM and BCM?

ECU is a general term that can mean anything driven by a computer since it stands for “Electronic Control Unit”. In the automotive electronics industry, Control Unit ECU is used as a generic term for any built-in system that controls multiple electrical features in a car. It usually includes: Body Control Module (BCM)