suspension in extended mode and Suspension failure

Hello Land Rover friends, sorry for my English, I'm a little rusty.

I've been having a problem with my air suspension since last week. It all started when a height sensor broke and the car showed me this in the 4x4 info (see picture 1) and I got the orange “suspension fault”. The car still inflated at terrain height and lowered at access height. You can still drive without any problems because the car apparently adheres to the other three functioning sensors while driving and the car pumps itself straight. I then replaced the right height sensor and the car displayed all wheels synchronously again (see picture 2). Unfortunately, since then the terrain height and access height no longer worked properly. When the height is activated, the car immediately goes into “extended mode”, pumps itself up at the front and tells me that I have an obstacle in front of me and that I should switch to normal mode after the obstacle. Then when I drive on the road, it drops to normal mode and after about 2-3 minutes of driving (about 100 km/h) gives me the red error “suspension fault”. If I then delete the error with my simple OBD II, start the engine and drive off immediately, I can drive normally without the error occurring again. It doesn't go into "extended mode" either. This morning I started the car normally, let it run briefly and it went into “extended mode” on its own and the same problem occurred again. Driven, red error, OBD error cleared, then problem free again. Last night I also checked the heights. Front 512mm, rear 482mm. At the front it is definitely 20mm too high. Is that why it goes into “extended mode”? I would also get a GAP OBD II Tool to get the problem under control and calibrate the altitudes if that is the problem.

I am thankful for every help

Greetings Stev
RR L322 3.6 tdv8 2009

The suspension has to be re-calibrated after a sensor change.

I can only really agree ^^^
My thoughts are if its a keeper then GAP is a great tool to have.

The thing is in your pic 2 (as far as I know) it is just showing the car is hitting its target (calibration numbers).

There have been a few other threads on "going to extended" but sorry cant remember the fix (if they ever came back with the fix)

Best course is to get the calibration right and the measurement's correct, then work from there.

I dont have the actual measurement's to hand and you are measuring from center to wheel arch I guess? but this may help to check.


Oh and welcome .

J

I just found something interesting. If the Range Rover is over 20mm too high it automatically goes into extended mode. The same thing happens even if you are 20mm below the specification. Factory specification should be 493mm at the front and 483mm at the rear. I just bought the GAP tool and will report back if it worked.

Good luck with it and do come back and let us know how you get on.

J

Hello, I received the GAAP TOOL today and calibrated the heights straight away. Then I drove and no red error occurred. When the Range Rover is stationary and I change the height to off-road mode, it goes back into ''extended mode'' and pumps the front of the car as high as possible so that I can overcome the ''obstacle''. It used to just inflate itself higher and I could drive normally up to 60kmh. Does anyone have an idea?

Stev said:

Hello, I received the GAAP TOOL today and calibrated the heights straight away. Then I drove and no red error occurred. When the Range Rover is stationary and I change the height to off-road mode, it goes back into ''extended mode'' and pumps the front of the car as high as possible so that I can overcome the ''obstacle''. It used to just inflate itself higher and I could drive normally up to 60kmh. Does anyone have an idea?

Click to expand...

Look at the live readings from the height sensors.

Stev said:

Hello, I received the GAAP TOOL today and calibrated the heights straight away. Then I drove and no red error occurred. When the Range Rover is stationary and I change the height to off-road mode, it goes back into ''extended mode'' and pumps the front of the car as high as possible so that I can overcome the ''obstacle''. It used to just inflate itself higher and I could drive normally up to 60kmh. Does anyone have an idea?

Click to expand...

Did you follow the guide from GAP for calibration to the letter?

But as above live data is a great thing to look at, also what is your screen showing now?

Try changing heights when moving slowly, sounds weird but the changes in suspension geometry is a lot. Has it had any suspension work done lately?

J

Are you sure you have fitted the correct sensor? extended mode occurs when the measured height value should be dropping but the measured value is static or raising. Extended mode should not be occurring when raising the suspension, which suggests the mechanical setup or the sensor is incorrect. I would suggest disconnecting the linkage and getting someone to move it up & down whilst watching the display screen to see if the movement on screen matches the physical movement.

Thanks for the quick responses. Nothing was changed in the suspension. Only the right height sensor was replaced and the problem has been there ever since. I set it so that the front is 493mm and the rear is 483mm. In the 4x4 Info everything is in a row. I'll take a look at the live data tomorrow and post it here again.

Stev said:

Thanks for the quick responses. Nothing was changed in the suspension. Only the right height sensor was replaced and the problem has been there ever since. I set it so that the front is 493mm and the rear is 483mm. In the 4x4 Info everything is in a row. I'll take a look at the live data tomorrow and post it here again.

Click to expand...

Has it/could it be installed upside down? Sure I have heard they can be, the arm.
Did you replace with the correct 1 as they are different and change depending on headlight’s.

J

The height sensor is installed 100% correctly.

But is it the correct one?

These are the standard heights.

Graculus said:

But is it the correct one?

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Yes, I ordered the right one (3PIN) and installed it again straight away.

I will adjust the height of the axes later for the default height. Maybe something is wrong. I added images because this is in the GAAP guidance (see picture 1 and 2). I should get the values for the axes during the height calibration, right (see picture 3)?

Not just 3 pin, is it for the correct corner?

So it has to be right, right?
The correct one has been ordered.

I seem to have found the error. The right front sensor does not transmit any heights. This is the one I swapped. I hopped around on all sides of the doors and all the values changed except the one on the front right. This value always remains 0. Should I buy the part again and exchange it or can I check the contacts?

At least you found it.
That's why Live data is so useful, although you didnt use it as I would.

But yes the sensor can be checked with a multi meter. Need to also check the connector, If I remember ( will look for diag later) they are 5v supply on 1 of the pins in the connector.
Un plug it put the meter (resistance) on and move it through its range if it changes chance are its in the wiring.

Was it a cheap E-bay sensor?

J