https://www.autohausaz.com/pn/MB-1708800560 Genuine Mercedes Hood Latch; Front Upper | 1708800560

Genuine Mercedes Hood Safety Catch; Front Lower | 1708800160

Don't know if this works found on the web "There is a simple backdoor method to unlock the trunk, try this first before trying to release the locking arm through the right license plate light opening.
With the ignition “On” press the “Top Down “ button. While holding the button turn off ignition and hold button 10 seconds. Trunk should unlock."