How to drain a battery from a BCM Silverado?
1) Using a D.C. Amprobe on the positive Cable I pulled the Fuses one at a time, at first I noticed no change, but with a little amount of time there will be change. 2) This is where the cooler of beer and a friend come into play.
Why does my Mercedes-Benz battery keep draining?
You try to start your Mercedes-Benz and the car is either completely dead or this happens: Battery drains happen when electronic equipment (consumer units) are constantly drawing current from the battery while the car is parked. One simple example is when lights are left on overnight. But it’s not always as simple as that.
What kind of battery drain does a GMC Quadrasteer have?
My 2004 GMC quadrasteer has developed a parasitic battery drain that kills the battery if it sits for more than a day. I’ve traced it to the BCM. I checked the drain with a meter after the truck had sit for 4 hours. The drain was about 3.5 amps. The drain after sitting for 12 hours was about 2.5 amps.
Why does my Mercedes medic draw so much battery?
A radio receiver in the car continuously listens for wake up signal from the key. As the car receives a signal in the assigned frequency it wakes up to validate the key. This causes current draw for several seconds. If the car is left parked in high pedestrian traffic areas this could be a problem.
1) Using a D.C. Amprobe on the positive Cable I pulled the Fuses one at a time, at first I noticed no change, but with a little amount of time there will be change. 2) This is where the cooler of beer and a friend come into play.
My 2004 GMC quadrasteer has developed a parasitic battery drain that kills the battery if it sits for more than a day. I’ve traced it to the BCM. I checked the drain with a meter after the truck had sit for 4 hours. The drain was about 3.5 amps. The drain after sitting for 12 hours was about 2.5 amps.
Why is the battery draining on my Mercedes medic?
If the car is left parked in high pedestrian traffic areas this could be a problem. It may cause the battery to drain within a couple of days in some models. Try to turn off the proximity key function in your car by looking up the instructions on the owner’s manual.
What’s the parasitic drain on a Silverado battery?
They said they monitored the parasitic drain for an hour and it was within specs, less than 40mA, but I don’t remember exactly what, then they charged me an extra $60 for checking it. I took it home, let it sit for 3 hours and then checked the drain.
Is there such a thing as parasitic battery drain?
But you can search “parasitic battery drain”, as well as “dual battery”, and you are sure to find them. Same on the DTC forums (different username).
They said they monitored the parasitic drain for an hour and it was within specs, less than 40mA, but I don’t remember exactly what, then they charged me an extra $60 for checking it. I took it home, let it sit for 3 hours and then checked the drain.
What happens when a BCM is turned off?
Your vehicle performance may also be affected as the BCM communicates with other control modules in the vehicle. Parasitic drain is due to components in your vehicle continuing to run after the key is turned off.
How to find the cause of parasitic battery drain?
Luckily, you can usually find the cause of a parasitic draw yourself. Start by connecting a digital multimeter to the negative battery terminal of your vehicle. Then, remove the fuses one at a time while watching for changes in the multimeter’s reading.
How to fix a parasitic drain on a multimeter?
Disconnect the negative battery cable. On the amperage side of the multimeter dial, set it to 20 amps. Disconnect the negative battery cable. Touch a lead to the negative battery cable terminal. Touch the other lead to the negative battery post, completing the circuit within the multimeter, which will display the amp draw.
Your vehicle performance may also be affected as the BCM communicates with other control modules in the vehicle. Parasitic drain is due to components in your vehicle continuing to run after the key is turned off.