2026-09-08

Varmeveksler – bakre drivenhet (4DU) (fjerne og skifte ut)

Korrigeringskode 40305232 0.66 MERK: Hvis ikke noe annet er uttrykkelig oppgitt i prosedyren, gjenspeiler korrigeringskoden og dens tilhørende FRT alt arbeidet som kreves for å gjennomføre denne prosedyren, inkludert de tilknyttede prosedyrene. Ikke stable korrigeringskoder med mindre du bli uttrykkelig bedt om det. MERK: Se Flat rate-tider for å lære mer om FRT-er og hvordan de lages. MERK: Se Personlig beskyttelse for å forsikre deg om at du bruker riktig PVU når du gjennomfører prosedyren nedenfor. MERK: Se Forholdsregler for ergonomi for trygge og sunne arbeidspraksiser.

  • 2026-09-01: Removed steps to disconnect/connect the LV power and added oil pump low pressure test routine.
  • 2024-01-10: Corrected spellings of "exchanger".
ADVARSEL
Denne prosedyren er et UTKAST. Selv om den har blitt godkjent, kan det hende at advarsler og forholdsregler mangler. Følg sikkerhetskravene, og vær ytterst forsiktig ved arbeid på eller nær høyspenningssystemer og -komponenter.

Fjerne

  1. Move the vehicle to a 2 post lift. See Heve bil – løftebukk med 2 stolper.
  2. Open the LH front door and raise the LH front window.
  3. Enable Service Mode on the touchscreen. See Servicemodus.
  4. Unlock the vehicle gateway. See Gateway (lås opp).
  5. Access the thermal system routines on the touchscreen: Touch Quick Controls > Service Mode > Diagnostics > Thermal.
    Merk
    Authorize routines by holding the turn signal stalk full up (right hand turn) while applying brake with the key in the vehicle.
  6. Touch Start Thermal Fill Drain (Coolant Only) on the touchscreen.
    Merk
    Touch the X at the top left of window to close once completed.
    Merk
    Verify the indicator displays green and the vehicle is ready for the coolant fill/drain.
    Merk
    Thermal "Fill Drain" routine has a 5 hour time limit. After 5 hours, the routine must be performed again.
  7. Remove the rear underhood apron. See Deksel under panser – bak (fjerne og skifte ut).
  8. Remove the cabin intake duct. See Kanal – øvre – kupéinntak (fjerne og skifte ut).
  9. Remove the rear aero shield panel. See Panel – luftskjerm – bakre (fjerne og skifte ut).
  10. Drain the gearbox fluid from the rear drive unit. See Girolje – bakre drivenhet (4DU) (tømme og fylle).
  11. Position the coolant drain collector underneath the RH rear of the HV battery.
  12. Release the clip that attaches the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger.
  13. Release the clip, disconnect the rear drive unit inverter to heat exchanger hose from the rear drive unit heat exchanger, immediately plug the heat exchanger fitting, allow the hose to drain, and then plug the hose fitting.
  14. Release the clip that attaches the rear drive unit outlet hose to the rear drive unit heat exchanger.
  15. Release the clip, disconnect the rear drive unit outlet hose from the rear drive unit heat exchanger, and then immediately plug both fittings.
    Merk
    Coolant loss greater than 1 L will require a vacuum fill.
  16. Remove the bolts (x2) that attach the rear drive unit heat exchanger to the rear drive unit, and then remove the heat exchanger from the drive unit.
    Merk
    Use of the following tool(s) is recommended:
    • 4 in extension
    • External Torx Plus EP10
    • Ratchet/torque wrench
    Merk
    Confirm that the O-rings (x2) are not stuck in the rear drive unit.

Montere

  1. Apply a light coat of KAF1 oil to the O-rings of the heat exchanger, and then wipe away any excess oil.
  2. Install the rear drive unit heat exchanger onto the rear drive unit, and then install the bolts (x2) that attach the heat exchanger to the drive unit.
    5 Nm (3.7 lbs-ft) +30 deg
  3. Remove the plugs from the fittings, immediately connect the rear drive unit outlet hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  4. Fasten the clip that attaches the rear drive unit outlet hose to the rear drive unit heat exchanger.
  5. Remove the plugs from the fittings, immediately connect the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger, fasten the clip, and then perform a Push-Pull-Push check of the fitting.
  6. Fasten the clip that attaches the rear drive unit inverter to heat exchanger hose to the rear drive unit heat exchanger.
  7. Remove the coolant drain collector from under the vehicle.
  8. Refill the rear drive unit with gearbox fluid. See Girolje – bakre drivenhet (4DU) (tømme og fylle).
  9. Install the mid aero shield panel. See Panel – luftskjerm – bakre (fjerne og skifte ut).
  10. Lower the vehicle fully.
  11. Connect a laptop with Toolbox to the vehicle. SeeToolbox (koble til og fra).
  12. Perform the routine: TEST-SELF_DIR_X_OIL-PUMP-PRESSUREvia Toolbox:(link)
  13. Disconnect the laptop from the vehicle. SeeToolbox (koble til og fra).
  14. Remove the cap from the coolant bottle.
    Merk
    Perform this step only for heat pump vehicles.
  15. Inspect the coolant level and add coolant as necessary to bring the fluid level to the Max line.
    Merk
    If greater than 1 L of coolant was lost during repair, a vacuum fill is required.
  16. On the vehicle touchscreen, go to Service Mode > Thermal > Stop Thermal Fill/Drain, touch Run and allow the routine to complete.
  17. On the vehicle touchscreen, go to Thermal > Coolant System > Coolant Purge Start, touch Run and wait for the routine to complete (10 minutes).
  18. Add coolant to the reservoir as necessary, and install the reservoir cap.
  19. Install the cabin intake duct. See Kanal – øvre – kupéinntak (fjerne og skifte ut).
  20. Install the rear underhood apron. See Deksel under panser – bak (fjerne og skifte ut).
  21. Disable Service Mode. See Servicemodus.
  22. Raise the LH front window and close the LH front door.
  23. Remove the vehicle from the 2 post lift. See Heve bil – løftebukk med 2 stolper.