Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Control Module And Hydraulic Unit, Removing And Installing, Bi-Turbo Diesel Engine: Removing
Component Location:
The control module is bolted to the hydraulic unit -1- and is located in the engine compartment on the right side.
Risk of destroying the brake lines by bending.
- Never forcefully bend the brake lines in the hydraulic unit area.
-- Read and note the present control module code.
-- On vehicles with a coded radio, note the code. Retrieve it if necessary.
-- Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .
-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .
-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .
-- Release and disconnect the connector -1- for the Oil Level Thermal Sensor -G266-.
-- Release and disconnect the connector -2- from the Heater Support Pump -V488-.
-- To do so, open the catch -3- in the direction of -arrow- and release the connector.
-- Remove the front exhaust pipe. Refer to OVERVIEW - MUFFLER .
-- Remove the pendulum support. Refer to PENDULUM SUPPORT, REMOVING AND INSTALLING .
-- Remove the driveshaft from the front of the bevel box (refer to OVERVIEW - DRIVESHAFT ) and then move it to the side.
-- Position the : T10533 -A- as shown.
-- Position the : T10533/2 -B- on the flat connection point of the : T10533/1 .
-- Install the original bolt of the pendulum support -1- in the front threaded hole of the pendulum support.
-- Install a M8 x 60 mm bolt -2- with a washer in the left threaded hole of the noise insulation.
-- Establish a distance of 20 mm -a- between the threaded connection height and the subframe using washers.
-- Tighten the bolts hand-tight.
-- Push the engine with the : T10533 as far forward as possible.
-- Unclip the reducing agent delivery line -2- on the coolant expansion tank and on the toothed belt guard -B arrows-.
-- Open the couplings -A and B- and remove the fuel lines. Disconnect the couplings. Refer to CONNECTOR COUPLINGS, DISCONNECTING .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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