2003 Mercedes E-Class Owner's Manual - Page 329
2003 Mercedes E-Class Manual
Page 329 highlights
Practical hints Unlocking/locking in an emergency i When changing batteries, always replace both batteries. The required replacement batteries are available at any authorized Mercedes-Benz Center. SmartKey/SmartKey with KEYLESS-GO* Remove mechanical key 1 ( page 327). Insert the mechanical key in the side opening and push the gray slide. Battery compartment 2 is unlatched. Pull battery compartment 2 out of the key housing in direction of arrow. Remove the batteries. Using a lint-free cloth, insert new batteries under the contact spring with the plus (+) side facing up. Return battery compartment into housing until it locks into place. Fuel filler flap emergency release 1 Mechanical key 2 Battery compartment Replacement batteries: Lithium, type CR 2025 or equivalent. 3 Battery 4 Contact spring 1 Release knob Remove right-side tail trim. Turn release knob 1 clockwise (arrow). The fuel filler flap can know be opened. 329