THINGS YOU NEED TO KNOW BEFORE DISCONNECTING YOUR CAR BATTERY
Disconnecting a car battery can lead to unexpected issues. Here are some potential problems you might encounter:
1. Starting problems
2. Drivability issues
3. Loss of air conditioning
4. Malfunction of power accessories (windows, seats, sunroof)
5. False warning lights
6. Damage to electronic modules
Disconnecting the car battery to reset the Powertrain Control Module (PCM) on late-model vehicles does more than just erase the keep-alive memory. It can also erase vital learned information necessary for other modules to function normally.
IT ALL DEPENDS ON: THE YEAR, MAKE AND MODEL OF YOUR VEHICLE
1. Battery voltage MUST be maintained to the PCM and other modules while the battery is disconnected.
2. NEVER disconnect the car battery while the engine is running or the ignition key is turned on.
3. Disconnecting the car battery can create a high-voltage spike in the electrical system, potentially damaging electronic modules.
LEARN WHAT CAN GO WRONG BEFORE YOU DISCONNECT YOUR CAR BATTERY
Disconnecting your car battery without properly monitoring its voltage may cause the engine to run poorly. High or low voltage could cause the air/fuel mixture to become either too rich or too lean, which might make your transmission feel abnormal until the PCM can relearn the shift adjustments. Additionally, an affected module could potentially prevent the ABS or airbag systems from working.
Your climate control module may also be affected. On some vehicles, this means the A/C will not work until the module is reprogrammed with the correct settings. It can also reset the body control module (BCM), disrupting the operation of power accessories such as power windows, memory seats, power sunroofs, or electronic suspension settings. It may even reset or disable the anti-theft system, causing the engine to crank but not start, as the system might think someone is trying to steal the vehicle.
You might also lose power window and sunroof position settings, as well as steering angle sensor settings. The steering angle sensor will need to undergo a relearn procedure after disconnecting the battery. Replacing the car battery on some vehicles requires entering the new battery information into the PCM with a scan tool because the vehicle’s charging system is programmed to gradually increase the charging rate as the battery ages.
Finally, the most common issue following a battery disconnection is the loss of channel settings on the electronic radio and digital clock.
At Bateriku.com, we understand the urge to DIY and experiment, especially when stuck at home during an extended Movement Control Order. However, if you need advice on anything related to your car battery, we are just a few clicks away. Stay safe at home and ensure your car is well-maintained with Bateriku.com.
CALL BATERIKU.COM FOR ROADSIDE ASSIST TODAY!
We offer free car battery delivery and installation if you're having problems with the car battery.
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