How To Change Auxiliary Battery Mercedes E350. Use a trim removal tool to pry off the fuse box access panel 1 on the side of the dash. With your ratchet and socket remove one bolt 5 from the panel covering the auxiliary battery G17.
Open the hood and locate the auxiliary battery on the passenger side of the engine bay. With your ratchet and socket remove one bolt 5 from the panel covering the auxiliary battery G17. Remove the positive ground line from the battery.
Spray battery terminal protector on the battery post to prevent corrosion.
You may want to consider some qualified hands-on help with this. The only battery Ive found is the main battery under the passenger side of the hood next to the cabin air. If the power supply was interrupted battery. Up to 20 cash back I have a 2011 MB e350 The light came on AUXILIARY BATTERY MILFUNCTION it happen every 7 to 10 days.
