Mercedes-Benz Tech Tip: Convertible Top Inoperative

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Import Car
Providing technical information and service resources to the import vehicle community
European

Mercedes-Benz Tech Tip: Convertible Top Inoperative

Found the convertible top hydraulic pump motor was running, but the top did not move. Connected a scan tool to check for codes and found no codes were displayed. Attempted to lower the top with a scan tool - got the same results.

ImportCar Staff Writers
By ImportCar Staff Writers
Published:

Vehicle:

Related Articles

1999, Mercedes-Benz CLK320, 3.2L

Cause:

Found the convertible top hydraulic pump motor was running, but the top did not move. Connected a scan tool to check for codes and found no codes were displayed. Attempted to lower the top with a scan tool — got the same results. Accessed the convertible top hydraulic pump, checked the fluid level and found the fluid level was correct. Disconnected the connector for the convertible top hydraulic pump motor, inspected the connector, terminals and wiring harness and found no faults. Used a fused set of jumper wires, applied voltage and ground to the pump motor and found the motor ran. These tests indicated an internal fault was present in the convertible top hydraulic pump, verifying that the convertible top hydraulic pump was faulty.

Correction:

Replaced the convertible top hydraulic pump and verified the vehicle operated properly. The customer’s concern did not return.

Courtesy of Mitchell 1 SureTrack Real Fix.

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