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Hyundai Equus: ECS (Electronic Controlled Suspension) malfunction warning message

If ECS malfunction warning message comes on while driving, ECS is not working properly.
We recommend that the system be checked by an authorized EQUUS dealer.
✽ NOTICE

CAUTION
If the ECS malfunction message illuminates when there is no air in the suspension, the vehicle height will be very low, so do not drive the vehicle to protect it from the projections on the surface of the ground. Take your vehicle to an authorized EQUUS dealer by towing the vehicle and have the system checked. You should tow the vehicle as shown in the picture.

When you load the vehicle onto the tow truck, the loading angle(1) should be smaller than 6°.
To control the vehicle height
Advanced smart cruise control system (If equipped)Repair procedures
Air Injection Procedure
•
When injecting air into the air suspension system, always
raise the vehicle off the ground using a lift to prevent potential
damage to the ...
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This is the maximum allowable weight that can be carried by a single axle (front
or rear). These numbers are shown on the certification label. The total load on
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Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the HO2S connector.
3.
Measure resistance between the HO2S terminals 3 and 4.
4.
Check that the resistance is within the speci ...