Lumbar Support Leak - LotusTalk - The Lotus Cars Community
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post #1 of 4 (permalink) Old 08-12-2019, 05:13 PM Thread Starter
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Lumbar Support Leak

Hi all. My lumbar support inflates well, but slowly deflates over about 60 minutes.
What is required to remove the lumbar support air bag and tubing? Is there a part that regularly fails that I should look at first?
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post #2 of 4 (permalink) Old 08-12-2019, 05:25 PM
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I haven't really heard of a failure on these systems. I would start by removing the seat from the car and tracing the hose back from the bulb/valve unit into the seatback. I suspect you will find a fault at the valve or along the hose.


'83 Esprit Turbo (The Fabulous Trashwagon)
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post #3 of 4 (permalink) Old 08-13-2019, 03:35 PM
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I've got the same problem on my S4s. Please share if you find something.
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post #4 of 4 (permalink) Old 08-14-2019, 03:59 PM
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i couldn't get mine out even with my seats upside down in my living room. The bladder seems glued to the frame but i don't know that for sure. Anyway, the plastic hose disintegrated. i replaced it with silicone vacuum hose, superglued and zip tied around the barbs of the bladder and bulb. Likely your hose is cracked
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