How do you open the trunk of a Mercedes 230 E 1990 model sedan without a key?

To open the trunk of a 1990 Mercedes 230 E without a key, you can try using the manual release lever located inside the vehicle, usually found near the driver's seat or in the glove compartment. If that’s not accessible, you may need to remove the rear seat to reach the trunk release mechanism directly. Alternatively, a locksmith or a professional might be able to assist you in unlocking it without damage.