1986 5000S Question

[johnnyg]

Went to charge the battery on this newly acquired car and noticed some type of vacuum valve with elelctronic control sitting next to it under the seat. There is a black vacuum hose attached to it with a plugable wiring harness connected but I have no idea what it is. There is also a clear vinyl tube laying under the seat that goes through the floor but there is nothing connected on the passenger compartment side. Any idea what these are for?

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[88A5TQ]

sounds like its the vacuum motor for the vacuum actuated door locks

[johnnyg]

Thanks, exactly. Found it in an online schematic diagram. Any idea what the extra clear hose is for that runs through the rear floor under the right seat is for?

[NH_USA]

The clear hose was most likely for the battery vent. Audi (VAG) used batteries with an external vent when they were placed in the passenger compartment.

[johnnyg]

Thanks for the info. I would imagine there must have been some type of battery container or the like to house the original battery, but anyhow, I appreciate the feedback.

[ledzepp2994]

there wasnt a container some batteries have little valves on them that the hose slides on to