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Mercedes-Benz W211 Battery Removal (2003-2009) E320, E500, E55 | Pelican Parts DIY Maintenance Article
![W211 electrical battery drain. The Comand system is active after the car is locked and fob is removed. Takes three days, W211 electrical battery drain. The Comand system is active after the car is locked and fob is removed. Takes three days,](https://f01.justanswer.com/87CQEAqz/image.jpg)
W211 electrical battery drain. The Comand system is active after the car is locked and fob is removed. Takes three days,
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Mercedes-Benz W211 Auxiliary Battery Replacement (2003-2009) E320, E500, E55 | Pelican Parts DIY Maintenance Article
![On my 2003 Mercedes E55 AMG (W211), I still have that short somewhere that drains my battery. It's not the alternator On my 2003 Mercedes E55 AMG (W211), I still have that short somewhere that drains my battery. It's not the alternator](https://ww2.justanswer.com/uploads/eurotec/2011-12-07_195642_capture.png)
On my 2003 Mercedes E55 AMG (W211), I still have that short somewhere that drains my battery. It's not the alternator
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Check battery in the SBC block on W211, W219 / Checking charge and year release battery in SBC block - YouTube
![Mercedes-Benz W211 Auxiliary Battery Replacement (2003-2009) E320, E500, E55 | Pelican Parts DIY Maintenance Article Mercedes-Benz W211 Auxiliary Battery Replacement (2003-2009) E320, E500, E55 | Pelican Parts DIY Maintenance Article](https://cdn4.pelicanparts.com/techarticles/Mercedes-W211/71-BASICS-Auxiliary_Battery_Replacement/images_med/pic06.jpg)