Having it hooked up to a factory scan tool would be your best bet . Check for DTC'S diagnostic trouble codes . Without testing ,code scan ,we'd only be guessing .
Very complex , the untrained person hasn't got a pray of fixing this . You have no idea what your dealing with .
Vehicle Dynamic Suspension
The vehicle dynamic suspension consists of the following components:
- Rear air suspension control (RAS) module (5A919)
- Snorkel
- Drier
- Air compressor (5319)
- Air suspension switch (5K761)
- Solenoid valve (5311)
- Air spring (5560)
- Air suspension height sensor (5359)
- Air line
- Rear Air Suspension Control Module
A microprocessor controls the air suspension system. The microprocessor and its supporting hardware are contained in the rear air suspension control module. The rear air suspension control module responds to signals from various sensors in the vehicle to maintain the programmed ride height while the vehicle is either moving or stopped. The rear air suspension control module accomplishes this by opening and closing solenoid valves to control the amount of air in the air spring(s). The rear air suspension control module turns on the compressor by applying voltage through the compressor relay to inflate the air spring(s) and raise the vehicle. The rear air suspension control module opens the vent solenoid to lower the vehicle by releasing air from the air spring(s) in response to signal inputs from the air suspension height sensor(s).
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Rear Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1317
Battery Voltage High
Rear Air Suspension Control Module
GO to Pinpoint Test C .
B1318
Battery Voltage Low
Rear Air Suspension Control Module
GO to Pinpoint Test C .
B1342
ECU Is Defective
Rear Air Suspension Control Module
INSTALL a new rear air suspension control module. REFER to Module-Air Suspension Control . TEST the system for normal operation.
C1441
Steering Sensor Channel A Circuit Failure
Rear Air Suspension Control Module
REFER to Section 211-00 .
C1442
Steering Sensor Channel B Circuit Failure
Rear Air Suspension Control Module
REFER to Section 211-00 .
C1722
Air Suspension Height Sensor Power Circuit Short to Power
Rear Air Suspension Control Module
GO to Pinpoint Test D .
C1723
Air Suspension Height Sensor Power Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test E .
C1760
Air Suspension Rear Height Sensor High Signal Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test F .
C1763
Air Suspension Rear Height Sensor High Signal Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test G .
C1765
Air Suspension Rear Height Sensor Low Signal Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test F .
C1768
Air Suspension Rear Height Sensor Low Signal Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test H .
C1770
Air Suspension Vent Solenoid Output Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test I .
C1773
Air Suspension Vent Solenoid Output Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test J .
C1790
Air Suspension LR Air Spring Solenoid Output Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test K .
C1793
Air Suspension LR Air Spring Solenoid Output Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test L .
C1795
Air Suspension RR Air Spring Solenoid Output Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test M .
C1798
Air Suspension RR Air Spring Solenoid Output Circuit Short to Ground
Rear Air Suspension Control Module
GO to Pinpoint Test N .
C1813
Air Suspension Vent Request Exceeded Max Timing
Rear Air Suspension Control Module
GO to Pinpoint Test O .
C1818
Air Suspension Air Compressor Request Exceeded Max Timing
Rear Air Suspension Control Module
GO to Pinpoint Test P .
C1830
Air Compressor Relay Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test Q .
C1832
Air Compressor Relay Circuit Short to Power
Rear Air Suspension Control Module
GO to Pinpoint Test R .
C1840
Air Suspension Switch Circuit Failure
Rear Air Suspension Control Module
GO to Pinpoint Test S .
C1842
Air Suspension Switch Circuit Short to Power
Rear Air Suspension Control Module
GO to Pinpoint Test D .
C1897
Steering VAPS Circuit Loop Failure
Rear Air Suspension Control Module
REFER to Section 211-00 .
U1041
SPC Invalid or Missing Data for Vehicle Speed
Air suspension dash light comes on after driving about 15 minutes after a couple of hours of driving the rear drops down. Restarting the car resets it and the light is off for about 10 minutes again. Fuses are OK.
since they dont make coil springs for rear of 99 lincolin town car what vehicle can i buy them for that will fit my car
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