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Help!!!! My C350 2009 Battery Is Draining - Car Talk - Nairaland

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Help!!!! My C350 2009 Battery Is Draining by Nathan2016: 8:35am On Oct 15, 2020
Hello guys

My car battery drains over night once you park it without using it. You will need to jump start it with another battery for it to work.

Please if anyone have had the issue, let me know and if you know any legit mechanic in lagos or ogun state (OTA Precisely) that can solve the issue, let me know as well.
Re: Help!!!! My C350 2009 Battery Is Draining by Kingdemu: 9:17am On Oct 15, 2020
You have a parasitic battery drain. Luckily, you can usually embark on a DIY to find the cause of a parasitic draw yourself. First make sure no electrical components are on. Turn off the radio, AC, lights, wipers, etc. and close your glovebox. Engage the emergency brake, turn your vehicle off, and remove the key from the ignition if you haven't already. Then, close all of the doors and the trunk so that none of the circuits are activated Get a digital multimeter and connect 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. Once the readin drops, you’ve found tha culprit and can take steps to repair it.

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Re: Help!!!! My C350 2009 Battery Is Draining by lilkech(m): 10:42am On Oct 15, 2020
Kingdemu:
You have a parasitic battery drain. Luckily, you can usually embark on a DIY to find the cause of a parasitic draw yourself. First make sure no electrical components are on. Turn off the radio, AC, lights, wipers, etc. and close your glovebox. Engage the emergency brake, turn your vehicle off, and remove the key from the ignition if you haven't already. Then, close all of the doors and the trunk so that none of the circuits are activated Get a digital multimeter and connect 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. Once the readin drops, you’ve found tha culprit and can take steps to repair it.

I thought multimeters have a red and black wire. Would you connect both to the negative terminal of the battery? I’m not good with electronics
Re: Help!!!! My C350 2009 Battery Is Draining by Kingdemu: 11:00am On Oct 15, 2020
lilkech:


I thought multimeters have a red and black wire. Would you connect both to the negative terminal of the battery? I’m not good with electronics
Yes it true the multimeter has both a black wire and a red wire attached to it as well as several different input slots. On tge multimeter, be sure to connect the black wire to the "com" (common ground) input and plug the red wire into the highest amp input (usually 20A). Set the dial on the multimeter to measure amps. On the battery, place the red lead through the metal circle at the end of the negative battery cable. Touch the black lead to the negative battery terminal.

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Re: Help!!!! My C350 2009 Battery Is Draining by lilkech(m): 12:44pm On Oct 15, 2020
Kingdemu:
Yes it true the multimeter has both a black wire and a red wire attached to it as well as several different input slots. On tge multimeter, be sure to connect the black wire to the "com" (common ground) input and plug the red wire into the highest amp input (usually 20A). Set the dial on the multimeter to measure amps. On the battery, place the red lead through the metal circle at the end of the negative battery cable. Touch the black lead to the negative battery terminal.

Thanks a lot. I also have a battery drain issue and I couldn’t for the life of me understand how to use a multimeter before now. I’d try what you’ve posted. I appreciate your help.

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Re: Help!!!! My C350 2009 Battery Is Draining by Kingdemu: 1:18pm On Oct 15, 2020
lilkech:


Thanks a lot. I also have a battery drain issue and I couldn’t for the life of me understand how to use a multimeter before now. I’d try what you’ve posted. I appreciate your help.
You're welcome
Re: Help!!!! My C350 2009 Battery Is Draining by Piyke: 1:50pm On Oct 15, 2020
I did the parasitic drain procedure on an S class last year and it ended up being the tuner for the TV that was the culprit.

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Re: Help!!!! My C350 2009 Battery Is Draining by Nathan2016: 4:46pm On Oct 16, 2020
Kingdemu:
You have a parasitic battery drain. Luckily, you can usually embark on a DIY to find the cause of a parasitic draw yourself. First make sure no electrical components are on. Turn off the radio, AC, lights, wipers, etc. and close your glovebox. Engage the emergency brake, turn your vehicle off, and remove the key from the ignition if you haven't already. Then, close all of the doors and the trunk so that none of the circuits are activated Get a digital multimeter and connect 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. Once the readin drops, you’ve found tha culprit and can take steps to repair it.


Okay, thanks
Re: Help!!!! My C350 2009 Battery Is Draining by Nathan2016: 4:57pm On Oct 16, 2020
Kingdemu:
You have a parasitic battery drain. Luckily, you can usually embark on a DIY to find the cause of a parasitic draw yourself. First make sure no electrical components are on. Turn off the radio, AC, lights, wipers, etc. and close your glovebox. Engage the emergency brake, turn your vehicle off, and remove the key from the ignition if you haven't already. Then, close all of the doors and the trunk so that none of the circuits are activated Get a digital multimeter and connect 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. Once the readin drops, you’ve found tha culprit and can take steps to repair it.

Also have you done this before or do you own a mercedes?
Re: Help!!!! My C350 2009 Battery Is Draining by Chukwujohn(m): 9:27pm On Oct 18, 2020
Dear op, has the issue been resolved? Kindly contact me on WhatsApp 07026487133

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