Question about 2001 Land Rover Discovery Series II

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1999 Series2 Discovery rear suspension stays up when static and set to hi level. At normal level sometimes drops in 1 hour sometimes overnite, stopped to collect luggage dropped immediately didnt raise, left overnight then all OK , stopped for fuel dropped wouldnt raise, left overnite set to hi raised immediately. Now set to high just before switching off, pump for 10 secs, switch off ignition stays up for days. Any clues, Tony Green SA

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  • 149 Answers

Probably an air leak in one of the bags (£100 or so), should replace it as your compressor will be working harder than it should be, and will eventually also fail!
Could also be the height sensor (£35) but that is less likely.

Posted on Feb 22, 2010

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Posted on Jan 02, 2017

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Ride height specification for 2002 Bravada and procedure on replacing sensors.Or where can I look on line for this information.


Air Suspension ??????

Air Suspension Description and Operation
Air Suspension
The primary mission of the Air Suspension System is the following for the rear suspension under loaded and unloaded conditions:
• Keep the vehicle visually level
• Provide optimal headlight aiming
• Maintain optimal ride height
The Air Suspension System consists of the following items:
• Air suspension compressor assembly
• Air suspension sensors
• Rear air springs
Important: The Air Suspension System must have a voltage supply of at least 12.6V to operate properly.
The Air Suspension System will maintain the rear D height within 4 mm (0.15 in) in all loading conditions and the leveling function will deactivate if the vehicle is overloaded. The side to side D height variation is maintained within 8 mm (0.31 in). After ignition is turned off, the air suspension control module (ASCM) will remain active for between 30 minutes and 2 1/2 hours. The system will exhaust pressure within 30 minutes after the ignition is turned off to lower the vehicle after unloading. In a temperature-controlled environment, the leakage of the complete load leveling system will not result in more than 1.4 mm (0.05 in) drop of rear suspension height at GVWR during a 24 hour period. If the outdoor temperature drops from +20°C (+68°F) to -5°C (+23°F), the rear D height may drop as much as 25 mm (1 in). However, the Air Suspension System should return to the specified D height when the ignition is again cycled to ON.

What is the problem ?

Diagnostic Trouble Code (DTC) Displaying
The Air Suspension system has an internal clock to prevent overheating if the compressor assembly is running for a prolonged period of time. If the system overheats, all leveling function stops until the system cools down. During this time, the indicator LED on the air inflator switch will be quickly flashing at a constant rate.
The other three diagnostic trouble codes are displayed with a blink code on the inflator switch LED. The Air Suspension Compressor Assembly shall begin to indicate the code when the condition to cause the code becomes current.
The number of the fault code shall be represented by the number of flashing pulses on the inflator switch LED. The flashing pulses shall have a repetition rate of 0.5 seconds and each code shall be separated by a 3.0 second delay. All codes shall be flashed in the order of occurrence of the fault. The blink code shall take priority over other processes that have access to the inflator switch LED. Refer to the following:
• DTC 001
• DTC 002
• DTC 003

Trim Height Uneven or Low ??????

Feb 24, 2017 | Cars & Trucks

2 Answers

How to replace height sensor on 1999 ford expedition


it is at the rear end and looks look a guide rail with a plug I would first try to clean the connector and apply carbon conductive grease/NOT LITHIUM==OR DIELECTRIC THERE THE WRONG STUFF/and see if it responds it's only been there for 161/2 years braving winter after winter and its either still good or done from a lack of attention needed taking it out and really cleaning just might save some$$$$$

Mar 05, 2015 | 1999 Ford Expedition

2 Answers

Land rover discovery faults


May be a shock. Never heard this before but shocks fail in weird ways

Mar 29, 2014 | 2001 Land Rover Discovery Series II

1 Answer

1999 TD5 series 3 discovery just had new front springs and rear height sensors fitted. Now self leveling warning light on and suspension over inflated and wont come down. Help !


Have you had the truck setup on the computer since the new front springs? It may need levelling off manually via the computer to adjust the height.

Feb 25, 2010 | 1996 Land Rover Discovery

2 Answers

Discovery rear air suspension sitting down overnight


My car did this. I could actually park and feel my car raise up or down. Looking at my car it was sitting completely crooked as if I had hydraulics. lol I have a 2001 Discovery II. When I had it fixed at the dealer it was the rear airbag which is part of the air ride suspansion. I hope this helps.

Jul 13, 2009 | 2001 Land Rover Discovery Series II

2 Answers

Air suspension keeps going down on one side


Hi paul in case you dont already know this is most likely due to a leaky air spring or connection to the same

Apr 08, 2009 | 1999 Land Rover Discovery

1 Answer

Passenger wheel on drivers side lower


You may have damaged the suspension and or the wheel rim, i would suggest having the vehicle checked out before relying to much on it in hostile weather.

Jan 19, 2009 | 2001 Land Rover Discovery Series II

2 Answers

I have a 97 MKVIII with a mal-functioning  air suspension system. Parked on level ground the front end suspension depresses overnite. and upon starting it comes back up in the morning. It sometimes will...


leaks can be difficult to find in these systems. They could be in the air springs themselves, the air lines etc... not to mention you could have a ride height sensor that is malfunctioning or the control module. A lot of people are converting these old cars from the air ride suspension system to a standard passive coil spring conversion. A high quality, powder coated, American steel coil spring is DESIGNED to last the LIFETIME of the vehicle. http://www.strutmasters.com offers conversion kits with a lifetime warranty so youwon't have to worry about your suspension again. Give them a shot.. it definately beats the dealer price of around $1200 to fix your air ride.

Dec 02, 2008 | 1999 Lincoln Continental

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