Differential Electronic Module (DEM), Pump and Filter Removal Procedure for Volvo Haldex AWD 

We sincerely appreciate the positive feedback, Vitaly. Thanks for watching!

Glad you liked it, Ari! Thanks for watching.

You're welcome! Happy to help:)

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Glad it was helpful!

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Hi Juan. Glad we could help! If you have any other questions just let us know.

You're welcome!

You're welcome, Daniel!

Dear @Andrew Harris, can you please tell me how did you diagnose the fault? Did you had to put new pump in?

Happy to help!

Hi Roland. We suggest taking your vehicle to the dealership for this procedure. Alternatively, we do offer a repair service for your 2005 Ford Mercury Montego DEM. You can learn more about our repair service on our website here: xemodex.com/us/product/differential-electronic-module-for-ford-fo-1040-7f9z-4c016-10-20/

We'd need the tech to advise more. If you haven't already fixed this, then fill out this form: xemodex.com/us/technical-question-form/

Hi Alberto. You can contact our Tech Support department if you still require assistance with your troubleshooting. Simply fill out a "Technical Questions" contact form on our website. We're happy to help.

Hello! Please send an email to info@xemodex.com. Our tech support will help diagnose your issue and answer any questions regarding our products. Thank you.

Yes the motor and assembly must be removed, but this is an extensive job. You will need to raise the car high enough (on a vehicle hoist) to remove the motor and assembly from underneath the car. We do not recommend doing this procedure on your driveway.

Did you manage to get it done in the end? Any tips or comments you can pass on to me before I tackle it..? Cheers.

Hi Alfredo. Please read the following response from our tech: For the ford freestyle DTC-P0961 yes it is possible it’s just a solenoid. Code Description: The pressure control (PC) solenoid valve is an electronic device that regulates transmission line pressure based on the current flow through its coil winding. The magnetic field produced by the coil moves the solenoid's internal valve which varies pressure to the pressure regulator valve. The transmission control module (TCM) controls the PC solenoid valve by applying a varying amount of amperage to the solenoid. The applied amperage can vary from 0.1-1.1 amps. Low amperage, 0.1 amp, indicates high line pressure. High amperage, 1.1 amps, indicates low line pressure. The duty cycle of the PC solenoid valve is expressed as a percentage of energized ON time. Zero percent indicates zero ON time, non-energized, or no current flow. Approximately 60 percent at idle indicates maximum ON time, energized, or high current flow. The TCM determines the appropriate line pressure for a given load by comparing the throttle position sensor voltage, the engine speed and other inputs. When the TCM detects a continuous open or short to ground in the PC solenoid valve circuit, then DTC P0961 sets.

Hi Julie. I spoke to our tech and he said if it's just the pump then to replace the pump, filter and fluid. If the Haldex unit is acting up, then test the pump first before sending your unit in for repair. You can check our website in the "technical resources" section for our pump test flow chart. We recommend replacing the pump, filter and fluid when you replace/repair your Haldex AWD unit.

Hi Janna. Please contact us directly to speak to our tech specialist regarding your vehicle diagnosis. Call us toll-free at 1-888-712-2525 (US & Canada) or email us info(at)xemodex.com. Thank you.

Hi Rholenn, Unfortunately we do not provide Pre-Programmed units for the DEM so we cannot provide you with a compatible unit out of the box. However, we do offer a Repair service where you can send us your existing DEM unit to get rebuilt. You do not need to worry about part numbers as we will repair your existing unit and send it back to you fully remanufactured. We also recommend that you test your Haldex Pump & Filter as these are susceptible to failure. We do offer a Repair package for the DEM, Pump & Filter. You can visit our website for more information: xemodex.com/us/product-tag/available-services-for-dem/

Hi Aaron. You can contact our Tech Support department if you still require assistance with your troubleshooting. Simply fill out a "Technical Questions" form on our website. We're happy to help.

Hi Eric. Please contact us toll-free at 1-888-712-2525 and ask to speak to our tech support. They will help determine the issue. Thank you.

+Cocco Shop Hello! Yes, you are correct. When your DEM fails your AWD will not function.

Hi Sebastian. Please contact us to speak to our tech so we can help you diagnose your vehicle over the phone. You may contact us toll-free at 1-888-712-2525 or visit xemodex.com.

Hello! Please contact us directly to speak to our tech specialist regarding your vehicle diagnosis. Call us toll-free at 1-888-712-2525 (US & Canada) or email us info(at)xemodex.com. Thank you.

Hi Jon. You can contact our Tech Support department if you still require assistance with your troubleshooting. Simply fill out a "Technical Questions" form on our website. We're happy to help.

Hi Vicente, to place an inspection order, please contact us toll-free at 1-888-712-2525 (US & Canada) or email us info@xemodex.com. Thank you.

Hi Austin. You can check out our prices on our website xemodex.com or speak to our Customer Service toll-free at 1-888-712-2525 (US & Canada).

Hi John. In the video, our tech mentions that the clearance between the pump and the flange is minimal. You must remove the flange first to gain access to the pump.

THX

Hi Henry, For this demonstration, we are using a DEM from a 2003 S60. However, we can rebuild your unit if it falls under the following years: - 2003-2010 S60 AWD, XC70, XC90 AWD, V70 - 2005-2011 S40, V50 - 2004-2013 S80 (from chasis 335000) - 2010-2013 XC60

Henry Koivisto by the looks of the Haldex control module it does look like a 2nd Generation Haldex system.

Hi Niklas. I spoke to our tech and he said that it is gear oil/AOC fluid. Only a small amount should come out. He said you must drain out and change the fluid.

When you remove the filter cap and filter, that's when the AOC fluid spills out...be ready with a catcher pan. This completes the drain process.

Or, it will drain AOC oil when the pump is removed, whichever you remove first.

Hi Alexander. No, but we do offer a DEM repair and return service. Please call us toll-free (US & Canada) at 1-888-712-2525 or email info@xemodex.com to speak to our sales department. Thank you!

thank you

Hi Julie. No, you must use the specific AOC fluid. You can buy it from any Volvo dealer.

Hi San Sin. We would need more information about your vehicle to determine your issue. Please contact us toll-free at 1-888-712-2525 (US & Canada) or email us info@xemodex.com. Thank you.

+Austin Kent Hi Austin. We always recommend that our customers should replace the AOC feed pump, filter and oil prior to installing a remanufactured DEM. A clogged AOC filter will over-current the pump that will short internally, subsequently destroying the DEM.

+XeMODeX Inc So i just acquired an 05 xc70 that has a bad pump, i'd rather not have to replace the DEM if i don't have to.. is it possible for the pump to go out without taking out the DEM?

+Austin Kent As long as you can communicate with the DEM then it should be salvageable. First replace and then test the pump for operation. In some extreme cases, the firmware for the DEM may become corrupted and produce a code that cannot be erased. Our tech recommends that you first replace the pump. We have a DEM diagnostic flow chart on our website that you may find helpful: xemodex.com/us/diagnostic-flow-charts/