BenzWorld Junior Member
Date registered: Jan 2011
Vehicle: 91 R129 Black Mercedes 500
Location: Greensboro, NC
Mentioned: 0 Post(s)
Quoted: 13 Post(s)
Sorry. I was less than clear.
The mechanism will not run through the entire sequence for either opening or closing without manual intervention. The break in the sequence occurs with the raising and lowering of the rear compartment lid.
1. If the roof is up (closed) and the open sequence is initiated, the rear bow window pins unlock, the bow window will raise, the compartment lid unlocks, however the compartment lid will not raise - the sequence stops. Not only will the compartment lid not raise, but it cannot be moved up or down manually while the roof button is pushed - rather it is seemingly frozen in place presumably by the hydraulics. Release the mechanism button and the compartment lid moves freely.
2. If the roof is down (open) and the close sequence is initiated, the compartment lid will unlock but does not raise - the sequence stops. If I manually raise the compartment lid to get past this point, and then restart the closing sequence, the compartment lid lowers but does not lock. Obviously what should happen is the compartment lid should stay open as the roof is raised to its up (closed) position. If the closing sequence is manually advanced further, so that the top is resting on the front, but both the bow window and compartment lid are raised, the front locks will lock, the compartment lid will lower and lock, and the bow window will lower and lock.
The hydraulic lines appear to be hooked up improperly. Also, if the hydraulic lines were hooked up improperly then neither the bow window or the compartment lid mechanisms should function as they do in the above description.
The break in both sequences occurs with the failure of the compartment lid to raise. To emphasize, the compartment lid will lower and lock, and will unlock - but will not raise.
Since my initial inquiry I have reviewed the soft-top diagnostic-function test diagrams which from my reading places issues with raising the compartment lid with "S84/5 - soft top compartment open switch". This switch, according to the diagrams, is located somewhere along the back edge of the rear compartment. Is anyone familiar with this switch and if so, can you take a picture of same and post?