2014 Equus ECS light. Suspension - Hyundai Forums : Hyundai Forum
 
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post #1 of 6 (permalink) Old 04-17-2019, 05:52 PM Thread Starter
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Unhappy 2014 Equus ECS light. Suspension

I have a 2014 Equus with 141000 miles.
The car drives fine for about 45 minutes. After that the rear suspensions will deflate and the ECS light comes on. Th car will fall in its ass.
After the car cools down the suspension will work just fine and the car can stay level for months if I don't drive it.
I replaced the compressor and the solenoid and the left side suspensions front and back.
Anyone with similar issues?
Thanks in advance.
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post #2 of 6 (permalink) Old 04-18-2019, 08:35 AM
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Asking for guesses?

Maybe when driving, when going over bumps, the increase in the pressure in the air shock overcomes the sealing of a small leak in an airbag. When there is no high pressure demands on the bag, the rubber of the airbag is able to keep the internal pressure ("level for months if I don't drive it").

The suspension compressor should, for a while, work to keep the pressure up. It is designed to shut off when overheating, so that would account for your suspension working fine for a while, then the compressor overheats/stops and your suspension pressure will not build back up, causing the drop. 45 minutes of the compressor running more than usual would do it; if your system holds pressure for shorter drives, it would indicate the compressor is working the whole time without shutoff and keeping the pressure up.

If the car drops more on one side than the other, the lower side most likely has the air leak. The suspension airbag is the most suspect, but it could also be in the air lines or connectors.

You will probably need to take it to the dealer, a tech with the GDS system has many testing options you do not have available. Maybe just have them do a diagnostic (without repair) so you know for sure.

2011 Granite Gray EQUUS
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post #3 of 6 (permalink) Old 04-18-2019, 10:00 AM Thread Starter
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Thank you so much.
Your explanation make sense.
I was reluctant to take to the dealer for a diagnostic as they demanded $150 per hour and no guarantee on how many hours it would take. Billed in whole hours.
I will probably order the back suspension air bags. They are now available re-manufactured in Florida.
Thank you!
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post #4 of 6 (permalink) Old 04-19-2019, 07:34 AM
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Please, do share where these re-manufactured rear bags are available. I have seen rebuilt fronts, but not rear. That could save someone a lot of money!

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post #5 of 6 (permalink) Old 04-30-2019, 04:47 PM Thread Starter
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The remanufactured airbags are available at RMT, rebuildmastertech . The front are in stock. For the rear you need to send your core to be rebuilt.
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post #6 of 6 (permalink) Old 05-01-2019, 07:15 AM
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Thank you for the info. I was aware of RMT but had not looked at the site lately. They have expanded their products for the EQUUS, that's a good thing. Anyone with an EQUUS should bookmark/favorite that site.

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