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Luky - suspension pump fault
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Luky   
Thu Feb 12 2026, 08:10pm
Joined: Feb 10 2026
Member No: #6078
Location: Caspe (Zaragoza)
 Buenas noches, tengo un problema con mi c6, la bomba de la suspensión no se para en ningún momento, aunque quite contacto. Al final funde maxifisible. El coche está a la altura correcta, le han cambiado la centralita y sigue igual. A alguien le ha pasado?
Tengo que tener el maxifusible quitado y no puedo circular a mucha velocidad ya que la suspensión no corrige dependiendo del tipo de conduccion otro factor.
Saludos cordiales!
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Good night, I have a problem with my c6, the suspension pump doesn't stop at any time, even if I get out of contact. At the end melt maxifuse. The car is up to the right level, the switchboard has changed and it is still the same.

Has it happened to someone?

I have to have the maxifuse removed and I can not circulate at a high speed since the suspension does not correct depending on the type of driving another factor.
Best regards!
MGmike   
Fri Feb 13 2026, 02:13pm

Joined: May 21 2017
Member No: #3151
Location: South Queensferry
 Hi, I've not experienced this fault but...

As the pump runs with the ignition off you must have at least two faults! Or a major short circuit in the wiring!

The pump is supplied 12v from the maxi fuse via a relay mounted near the side of the radiator (big brown one). This should kill the power when the ignition is off.

Then you have a pump electronics fault. The little module on the side of the pump controls the pump running via power from the relay and a control wire from the bigger module (BHI) on top of the pump.

It's going to need a bit of investigation to find the fault... Good luck
Luky   
Mon Feb 16 2026, 02:08am
Joined: Feb 10 2026
Member No: #6078
Location: Caspe (Zaragoza)
MGmike wrote ...

As the pump runs with the ignition off, you must have at least two faults! Or a major short circuit in the wiring!

The pump is supplied 12v from the maxi fuse via a relay mounted near the side of the radiator (big brown one). This should kill the power when the ignition is off.

Then you have a pump electronics fault. The little module on the side of the pump controls the pump, running via power from the relay and a control wire from the bigger module (BHI) on top of the pump.

Gracias por su ayuda, haber si puedo encontrar el relé que usted dice {grande y marrón al lado del radiador} por ver si se queda enganchado.
También comprobaré los sensores de presión, en fin mucho trabajo. Gracias!!
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Thank you for your help, whether I can find the relay you say {large and brown next to the radiator} for seeing if it gets hooked.

I'll also check the pressure sensors, anyway a lot of work. Thank you!!
tpr   
Thu Feb 19 2026, 08:15pm
Joined: Jun 11 2024
Member No: #5543
Location: Newbury
 My C5X7 can run the pump when you get in the car before you turn on ignition. Is the C6 different in that regard? (I tried listening out for my C6 doing it yesterday, and did not hear anything.)
Tjensen   
Sat Feb 21 2026, 03:56pm

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 Same programming, depends on the situation. Often my C6 will start the pump and have 5 cm higher position after unlocking doors
zjacker2026   
Wed Mar 04 2026, 08:00am
Joined: Feb 11 2026
Member No: #6080
Location: singapore
 Si la bomba de suspensión de tu Citroën C6 no se detiene ni siquiera quitando el contacto y termina fundiendo el maxifusible, lo más probable es que haya un relé de potencia pegado, un cortocircuito en el cableado de mando o una señal errónea de algún sensor de altura que esté ordenando funcionamiento continuo, ya que si la centralita ya fue cambiada y el coche mantiene la altura correcta, el problema suele estar en el circuito de alimentación o en el bloque hidráulico; también conviene revisar el estado del BSM/BSI y comprobar si la bomba recibe tensión permanente cuando no debería, porque circular sin el sistema activo puede afectar la estabilidad y otros componentes mecánicos asociados, incluidos elementos de apoyo TBS bearings que dependen de la correcta gestión de la suspensión.
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If your Citroën C6's suspension pump doesn't stop even when you turn off the ignition and ends up blowing the fuse, it's most likely due to a stuck power relay, a short circuit in the control wiring, or an erroneous signal from a height sensor that's causing it to run continuously.

If the control unit has already been replaced and the car maintains the correct height, the problem is usually in the power supply circuit or the hydraulic unit. It's also advisable to check the condition of the BSM/BSI and verify if the pump is receiving constant power when it shouldn't, because driving without the system active can affect stability and other associated mechanical components, including support elements and automotive bearings that depend on proper suspension management.
 

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