My 2000 E320 battery is under the back seat on the right side.
My 1998 is the same and the back seat has a latch on the bottom of each side. Stick your finger in and push up on the latch.
The battery is in the boot on the right hand side under the mat.
Try the trunk under the mat next to the spare.
The battery is located in the trunk on the right (passenger side) hand side under the carpet and a black plastic panel. After you open and look at the trunk, and the battery is located at the right side of the spare tire and tool compartment .
It is located under the real seat. If you want to change the battery or disconnect it, make sure you provide and alternative power source during this procedure. If not your radio will lock up and you will have to go to a Mercedes dealer to get them to reset the code. One alternative is to use a battery charger as you intermediate power source.
No. Premium grade gasoline is required by Mercedes-Benz. To use a lower grade could cause engine damage.Source: FuelEconomy.gov:1998 Mercedes-BenzE320 Sedan -- See the related link.
Key
its under the behind seat
under the back seat
it is located in the trunk
in the bonit
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my motor light is on my 1998 e320