How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Marty Your Own Question
Marty
Marty, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 53904
Experience:  Bosch Certified Master Technician with over 35 years experience in the automotive industry.
13230946
Type Your Mercedes Question Here...
Marty is online now

My boot will only open with the key

Customer Question

My boot will only open with the key
Submitted: 3 years ago.
Category: Mercedes
Expert:  Marty replied 3 years ago.
Hi, if the pneumatics will not unlock the trunk I would check the vacuum line from the PSE module to the trunk lock for leakage. For something like this I would draw a vacuum on the system by disconnecting the line at the PSE module and applying vacuum to the line. If the trunk unlocks then the fault would have to be with the PSE module itself. Since the PSE module is also in the trunk you will need to open the trunk and manually lock the lock to simulate a closed trunk. Unplugging the PSE or removing the fuse for the PSE or disconnecting the negative battery cable will sometimes reset the system and get everything working. You might want to try that first.

Let me know if you have any questions.

Marty

Related Mercedes Questions