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.
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HOMESERVICE MANUALSLINCOLN2010MKZ FWD V6-3.5LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLEDESCRIPTION AND OPERATION6F35HYDRAULIC SYSTEM
2010 Lincoln MKZ FWD V6-3.5L
Hydraulic System
2010 Lincoln MKZ FWD V6-3.5LSECTION Hydraulic System
Hydraulic System
Transmission Fluid Filter
The transmission fluid in the sump area at the bottom of the transaxle case flows through a transmission fluid filter to the pump assembly. The pump is bolted to the torque converter housing and is driven by the torque converter hub.
Fluid Pump and Transmission Fluid Filter Components
Transmission Fluid Level
The transmission fluid level is checked with the transaxle at normal operating temperature between 85°C and 93°C (185°F and 200°F).
The transmission fluid level indicator is part of the transmission fluid filler tube located at the back of the torque converter housing.
The correct transmission fluid level is between the minimum and maximum marks on the transmission fluid level indicator.
Transmission Fluid Level Indicator
Main Control
The hydraulic system has a main control assembly. The main control assembly consists of a valve body and a solenoid body. Both the valve body and the solenoid body contain hydraulic shift valves. The solenoid body contains the shift solenoids that control the hydraulic valves. The solenoid body can be serviced as an assembly with the solenoids or the solenoids can be serviced individually. The solenoid body is controlled by the PCM. The PCM has software stored in it specific to the solenoid body currently in the transaxle, called the solenoid body strategy. A new solenoid body strategy must be downloaded into the PCM anytime a new solenoid body is installed.
The pump assembly contains the main pressure regulator valve assembly and the Torque Converter Clutch (TCC) control valve assembly.
Main Control Components
Main Control Valve Body
Solenoid Body
Pump Assembly
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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.