how to find if automatic trunk assistance pump is bad or leak in system?

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I have a 2006 Mercedes S500 doors nor trunk responding to key or door switch lock and unlock command. Head rest non responsive also. Automatic trunk assist pump in trunk has fluid but makes no sound while pressing button on key or trunks manual open button. How do I find and fix this problem?

newchilds in Phoenix AZ

Apr 9, 2015

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What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2006 Mercedes-Benz S500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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how to find if automatic trunk assistance pump is bad or leak in system?

What is your question?

newchilds in Phoenix AZ

Apr 9, 2015

1 Reply

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sunilpatelon Apr 11, 2015

The pump is hydraulic on right trunk side. They usually don't go bad. I would scan the PSE (Pneumatic Systems Electronics) first. Possible leaking trunk latch pneumatic actuator.

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Popular Answer

What are the best Mercedes-Benz repair shops?

RepairPal Certified shops can diagnose and repair your 2006 Mercedes-Benz S500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.