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Hydroactive Suspension On Lowest Level, Wont Raise - Pump Fuse Blown


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9 replies to this topic

#1 Alphaeagle

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Posted 06 October 2018 - 09:10 PM

Hi Guys

 

Helppppppppp

 

I had a Mechanic friend of mine work on my 2009 C5 X7 ( replacing rear brake discs/pads and refurbing the rear and front callipers)

 

He was using axel stands and a jack while working on the car....

 

The thing is the suspension is on the lowest setting and will not raise.......

 

Yes he did not raise the suspension to the highest setting before working on the car......

 

 

I have checked the LDS fluid level and all is correct....

 

The suspension does not raise and when I select the ride height the screen is showing no errors.....

 

this car is just one thing after another....

 

Any help please.......


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#2 Teedee

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Posted 07 October 2018 - 05:16 AM

Can you hear the pump running?


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#3 paul.h

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Posted 07 October 2018 - 10:59 AM

Another problem you may also have - If you have an electric handbrake then it might need to be calibrated using Citroen diagnostic equipment, unless your friend has already done this.

 

Whilst being worked on, was the battery disconnected to stop the suspension moving ? If so it might help to do a battery disconnection/reconnection. There is a procedure in the C5 Technical Section Common problems topic.

 

Sometimes this can self correct if left or the car used a bit but some simple things to check:

- as noted above, can you hear the pump running ?

- if you open and close all the doors does this cause the pump to run ?

- you could try bouncing the car up and down.

- have you checked the LDS tank fluid level with the suspension on low level - the fluid should be just covering the bottom of the strainer in the tank.

- has the LDS tank split and leaked fluid since this can happen if the car is jacked up without first raising the suspension and slackening the tank cap to release any pressure. The cap should not be tightened until the car is back on the ground.

- have you checked if the pump fuse has blown. It is a maxi fuse in a small fusebox near the side of the battery. It might have a red cover.

- you could try jacking the car back up, use axle stands, disconnect the battery and then see if the height sensors have been damaged. You could also move the sensor arms to see if they are seized or even broken (common problem and new arms are available at little cost from Citroen).

- whilst jacked up see if the wheels/suspension can be moved.

 

Failing this you might need a trip to a Citroen dealer but I seem to remember a topic where a car's suspension corrected itself whilst going over bumps to a dealer. You might need to go there anyway to have the handbrake calibrated if it is electric.



#4 Alphaeagle

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Posted 07 October 2018 - 12:52 PM

I can hear a high whine coming from the pump under the LDS tank.I have left the car over night and tried rasing and lowering the car all to no joy..I have disconnected the battery, i am getting no warning on the display.....

 

I will try in @ two hours and let you know....


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#5 Teedee

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Posted 07 October 2018 - 03:48 PM

I can hear a high whine coming from the pump under the LDS tank.I have left the car over night and tried rasing and lowering the car all to no joy..I have disconnected the battery, i am getting no warning on the display.....

 

I will try in @ two hours and let you know....

 

When you reconnect the battery follow the correct procedure.


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#6 Teedee

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Posted 07 October 2018 - 03:51 PM

See the procedure here


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#7 Alphaeagle

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Posted 07 October 2018 - 04:19 PM

Ok...still no joy.....i tried driving and the front was very bouncy. I then got the faulty suspension warning on the dashboard....
I have a guy looking at it now...trying to rest any errors on the system....
I did over fill the les fluid a little bit and some.is sleeping out the top of the cap...and the fluid is under pressure....so the pump seems to be working...

I will disconnect the battery and follow the bsi start up procedures....

Most likely off to a Citroen dealer for a.look see.

Hello on high water...
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#8 paul.h

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Posted 07 October 2018 - 08:05 PM

This topic has info on the pump fuse. Rather than a maxi fuse it is a fusible link. http://www.citroen-o...ery-fuses-list/



#9 Alphaeagle

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Posted 11 October 2018 - 07:08 PM

Ok, so I Ave the car back...and it was the fuse for the pump that had blown......so car up and running again.

Just wish to say thanks guys for all.your.help.
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#10 paul.h

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Posted 11 October 2018 - 10:43 PM

Good to see the car is now ok. I hope it did not cost much to fix it.

 

If you need any future work on the car that needs it jacking up, such as tyre replacement and the MOT test, make a point of telling the mechanic to raise the suspension to max height first and then slackening the LDS tank cap until it is back on its wheels. Hopefully this will avoid any possible suspension problems again. Any work on our C5 that I have not been able to do, I have used a Citroen dealer since they should know what they are doing.