Where is the body control module located on my car?
Having problems locating the bcm
My car has 226000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
The BCM or body control module will be located under the dashboard on the driver side towards the center of the vehicle. Look to the right of the steering column towards the firewall. It will be a small black rectangle. Some models did not come equipped with the module; however, there may be other components blocking your direct view.
If you need any assistance with your car, I recommend having a certified mechanic, such as one from YourMechanic, come to your location to perform a tune-up or any other services your car needs.
How to Identify and Fix Common car Problems ?
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STEP 1: Locate the Body Control Module (BCM) located just under the dash on the driver`s side of the vehicle. The BCM will have 7 connectors, each a different color.
It`s in the area right next to the DRL diode module, black plastic box about a cig pack size, has a bright green harness socket.
What is a body control module? It is a comprehensive system that communicates and integrates the work of all electronic modules through the vehicle bus. Strictly speaking, body control module function is to control load drivers and coordinates activation of auto electronics units.
A BCM unit, which is also an ECU, acts as a gateway or hub in order to interact with different ECUs. This mitigates the need for cabled plug-in connection between ECUs within the vehicle.
Control Modules are rare components that can be found in Neptune, Europa and the Void, dropping from enemies and containers. They are usually found in quantities of 1 to 3, and are most commonly obtained by defeating the Hyena Pack (Psamathe, Neptune).
Unfortunately, any control module needs to be flashed or reprogrammed to link to the sensors and monitors of an individual vehicle in order for them to work correctly. This needs to be completed by a dealer or some automotive specialists, as they control security codes to reprogram these systems.
you can reprogram the bcm but is dealer only to reprogram the keys . you will need to get the correct bcm with matching code as they are slightly different.
it is in the upper Drive side corner of the engine bay. the transmission control module is connected to a fairly large cable.
Luckily, resetting your transmission control module is pretty easy. How do you reset the transmission control module in your Chevy Silverado? Turn the key, press the gas, wait, turn the key off, release the gas, wait, and you`re ready to go. More often than not, this procedure is going to do the trick.
The BCM often acts as a gateway module responsible for monitoring and controlling all other sub-computers in your car. The short answer is yes, on some vehicles. A body control module (BCM) that isn`t properly receiving or transmitting signals can prevent certain vehicles from starting, depending on the system design.
The unit we`ll discuss today is the BCM – your vehicle most definitely has one.
Communication with Other ECUs
For example, the BCM can communicate with the Engine Control Module (ECM) to adjust the engine idle speed based on the electrical load of the vehicle`s accessories.
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.
One of the symptoms indicating that your ECM is not working properly is engine stalling or misfiring. Sometimes, this sign doesn`t show that there`s something wrong with the engine but that there`s a malfunction in the engine control unit. The chances are that the engine stalling won`t be consistent.
If the ECM fails completely, it will leave the vehicle without engine management control, and will not start or run as a result. The engine may still crank, but it will not be able to start without the vital inputs from the computer.
Body control modules are not interchangeable from one vehicle to the next in most cases. A used body control module may or may not permit reprogramming, and if not, the vehicle will never pass its own security protocol to enable the engine to start.
As with any electronic diagnostic test on a vehicle, diagnosing the BCM usually consists of connecting a diagnostic scan tool to your vehicle`s data port and verifying which (if any) systems display errors or show a lack of communication with the main computer.
The body control module (BCM) controls the ignition run relay through the control circuit by applying voltage to the ignition run relay coil control circuit. The ignition run relay is energised when the vehicle is in Service Mode, the vehicle is ON or when a remote start is requested.
Battery Control Modul (BCM)
The BCM battery control module is for control of the CM 1.7 A and CM 3.4 A charging modules via the Charge Control Bus (CCB). Messages such as fault, isolation fault and boost charge can be forwarded via the zero-potential signal contacts of the BCM.
The ECM sends the fuel level percentage via High Speed CAN-Bus to the body control module (BCM). The BCM then sends the fuel level percentage via Low Speed CAN-Bus to the instrument cluster in order to control the fuel gauge.
The TCM fuse is in the main fuse block and is probably 10 amps. If the fuse is blown, that is confirmation but the faulty fuse means there is a short circuit in the TCM and/or wiring that would have to be traced and repaired.
The transmission control module is a computer system responsible for the efficient function of your car`s transmission. Much like the Engine Control Module (ECM), the TCM gathers real-time data to adjust the transmission`s operation to keep your vehicle running smoothly.
Sometimes, problems with your TCM can be resolved by cleaning and draining the module. You`ll need your car manual to be able to locate and remove the TCM for this procedure. This will require some advanced car repair knowledge and is not recommended for individuals without previous auto troubleshooting experience.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Oil leaking from under car and "remote control car" sound when car is first started for a few minutes until it warm up.
ANSWER : Hello,
There are a number of things that could make an engine noisy when starting up. Depending on the specific type of sound you are referring to, this will determine how to properly diagnose. If there is a bit of a hissing sound, this may be a sign of a vacuum leak. If this is more of a shrieking sound, this may be a sign of a worn out or out of adjustment serpentine belt. If there is a bit of a howling or growling sound, this may be a sign of a worn out or low on fluid power steering pump. A rattling or pinging sound may be caused by an ignition problem. An engine can ping (or knock) due to an improper combustion process. A "spark knock" is the result of combustion occurring too early. Early combustion can occur from carbon buildup inside the combustion chamber, a lean air/fuel mixture, and advanced ignition timing (spark plug firing too soon). A clattering type sound may be a result of improper lubrication in the valve train which could be a more serious problem and should be addressed as soon as possible. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your vehicle to ensure everything is in proper working order.
There are a number of things that could make an engine noisy when starting up. Depending on the specific type of sound you are referring to, this will determine how to properly diagnose. If there is a bit of a hissing sound, this may be a sign of a vacuum leak. If this is more of a shrieking sound, this may be a sign of a worn out or out of adjustment serpentine belt. If there is a bit of a howling or growling sound, this may be a sign of a worn out or low on fluid power steering pump. A rattling or pinging sound may be caused by an ignition problem. An engine can ping (or knock) due to an improper combustion process. A "spark knock" is the result of combustion occurring too early. Early combustion can occur from carbon buildup inside the combustion chamber, a lean air/fuel mixture, and advanced ignition timing (spark plug firing too soon). A clattering type sound may be a result of improper lubrication in the valve train which could be a more serious problem and should be addressed as soon as possible. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect your vehicle to ensure everything is in proper working order.
Read Full Q/A … : Where is the body control module located on my car?
Where is the body control module located on my pickup?
ANSWER : The BCM is under the center console up near the front near dash. One of the seats need to be removed first, then you will need to remove center console. Once the console is removed you can then access the BCM mounting near the lower dash panel. Once the BCM is replaced it will need to be programmed to work on your vehicle by using a dealer level scanner.
Read Full Q/A … : Where is the body control module located on my car?
transmission control module failing. We just replaced the computer module (pcm) 4 days ago?
ANSWER : The P0700 trouble code is a code for transmission control module (TCM) failure. Without knowing the other codes, it will not be possible to give you an accurate answer; it all depends on the other codes:
If you get a P0755 code, you may have a transmission solenoid pack issue.
P0725 indicates a likely crank position sensor issue.
I would suggest having your Check Engine Light diagnosed by a qualified mechanic.
Read Full Q/A … : Where is the body control module located on my car?
I put the wrong key in my car and a few weeks later my car just shut down and it will not start I believe it’s the computer but…
ANSWER : Hi there. What had happened is the wrong key set the security to the vehicle. This is to prevent the vehicle from starting with the wrong keys. Try removing the battery cables (+) and (-) for 13 minutes. During that time, put the original key in the ignition and turn it on. Activate everything in the car even though there is no power. Then remove the key and hook up the battery cables. The computer should have reset and reset the security. If the security is still being tripped, then I recommend seeking out a professional, such as one from Your Mechanic, to help you
Read Full Q/A … : Where is the body control module located on my car?
ABS, ESP, EBR malfunction
ANSWER : You’re getting into an area that is kind of a dark art when you’re getting these kinds of codes. While I don’t know any of the symptoms that the car is exhibiting, I can tell you that failure in one of the control units can lead to codes showing up in the others and the ABS, ESP is a likely culprit since it interprets the wheel speed signals and sends the information to the other modules. You’re right that the module has to be coded, and I don’t think that Snap On has the software for that so the only place to go is the Star Diagnostic. (The consumer version of the Mercedes SDS ) You can Contact YourMechanic and see if anyone in your area has the appropriate equipment for this. Otherwise, this may be a case that would best be consigned to the Mercedes Dealer.
Read Full Q/A … : Where is the body control module located on my car?
Replaced alternator on car 2 times each time shows it’s charging 14v let car run for a little bit then test drive and car voltage
ANSWER : There are reports that the replacement alternators will not communicate with the engine computer and will not charge correctly. I recommend using only the manufacturer approved replacement part. It can be new or remanufactured but approved for use in the vehicle. Some lower cost alternators on the aftermarket will have charging problems since they will not communicate with the ECM on the vehicle and will stop charging.
Read Full Q/A … : Where is the body control module located on my car?
Where is the body control module located on my car?
ANSWER : The BCM or body control module will be located under the dashboard on the driver side towards the center of the vehicle. Look to the right of the steering column towards the firewall. It will be a small black rectangle. Some models did not come equipped with the module; however, there may be other components blocking your direct view.
If you need any assistance with your car, I recommend having a certified mechanic, such as one from YourMechanic, come to your location to perform a tune-up or any other services your car needs.
Read Full Q/A … : Where is the body control module located on my car?
Engine control modules replaced on a newer car
ANSWER : Hi there. These modules are common failures on the Jaguar XF. I am sure that this does not make you feel any better about it, but from my experience, once the modules are replaced you usually do not have any further issues, assuming that new factory modules were used. Many times these modules fail due to voltage issues in the electrical system, so it is important to always make sure that the battery and alternator are good and that all do the ground connections are clean and tight. Your car should be fine for now, but if it begins to have drivability issues, you may want to start looking to sell the car.
Read Full Q/A … : Where is the body control module located on my car?
