LS 600 h L LS 600 h CHASSIS

LS 600 h. L / LS 600 h CHASSIS 3/8/2021 Lexus TMME Europe Presentation 1

L 110 F HYBRID TRANSMISSION l Overall – L 110 F hybrid transmission mainly consists of the following components MG 1 Power Split Device MG 2 Mechanical Oil Pump (driven by the engine) 2 Electric Oil Pump 2 -stage Motor Speed Reduction Device Hydraulic Control Unit Transfer (LF 1 A)

L 110 F HYBRID TRANSMISSION *1: These are tentative values. *2: Weight shows the figure with the engine oil and engine coolant fully filled. l Specification TRANSMISSION TYPE MG 1 MG 2 Type Max. System Voltage Function Type Max. Output [k. W (HP] Max. Torque Max. System Voltage Lo Reduction Ratio Hi Function Oil Type Oil Capacity [Liters] Cooling System 3 Service Weight*2 [kg ] SLLC ATF L 110 F (LS 600 h. L / LS 600 h) Permanent Magnet Motor AC 650 V • Generator • Starter Motor Permanent Magnet Motor 165 k. W (221 HP)*1 300 N m*1 AC 650 V 3. 90 1. 90 • Generator (Regenerative Braking) • Drive motor ATF-WS L 110 (GS 450 H) 147 k. W (197 HP) 275 N m 5. 7 5. 4 Water-cooled 133 N. A. 127

L 110 F HYBRID TRANSMISSION l Gear Train Planetary Carrier B 2 Pinion Gear Engine MG 1 MG 2 Front Sun Gear Damper Long Pinion Gear Sun Gear Ring Gear Power Split Device 4 B 1 Short Pinion Gear 2 -stage Motor Speed Reduction Device Planetary Carrier Output Shaft Rear Sun Gear

L 110 F HYBRID TRANSMISSION l Gear Train Engine B 1 MG 1 B 2 MG 2 To Transfer Power Split Device • Sun Gear: MG 1 • Planetary Carrier: Engine • Ring Gear: Wheel 5 2 -stage Motor Speed Reduction Device • Front Sun Gear: B 1 • Rear Sun Gear: MG 2 • Planetary Carrier: Wheel • Ring Gear: B 2

L 110 F HYBRID TRANSMISSION l Gear 2 -STAGE MOTOR SPEED REDUCTION DEVICE The 2 -stage motor speed reduction device controls the MG 2 motor speed in two stages, between the low-speed range and high-speed range. Train POWER SPLIT DEVICE The power split device distributes the engine power as appropriate to directly drive the vehicle as well as the generator. Pinion Gear 6 GEAR Ring Gear Pinion Gear Sun Gear Long Pinion Gear Planetary Carrier (connected to the engine) NUMBER OF TEETH 78 22 34 Planetary Carrier (connected to the propeller shaft) Rear Sun Gear (connected to the MG 2) Front Sun Gear (connected to the No. 1 brake [B 1]) Ring Gear (connected to the MG 2 and output shaft) Sun Gear (connected to the MG 1) Short Pinion Gear GEAR Ring Gear Short Pinion Gear Long Pinion Gear Front Sun Gear Rear Sun Gear Ring Gear (connected to the No. 2 brake [B 2]) NUMBER OF TEETH 78 28 20 27 30

L 110 F HYBRID TRANSMISSION l 2 -stage Motor Speed Reduction Device – Realize high speed and high torque by compact MG 2 Torque NOTE: These are fundamental charts. Range of Hi Gear Drive (for high speed) NORMAL DRIVING EXAMPLE Gear Position Range of Lo Gear Drive (for high torque) Hi Lo For -A 42. 3 (26. 3) 73. 0 (45. 3) For -W 49. 3 (30. 6) 85. 2 (52. 9) Vehicle Speed [km (mph)] 7 Vehicle Speed

L 110 F HYBRID TRANSMISSION l 2 -stage Motor Speed – B 1 and B 2 Control Reduction Device HV ECU SL 1 Linear Solenoid Valve SHIFT POSITION B 1 B 2 IG OFF READY R N Lo Hi P SL 2 Control Valve B 1 8 Line Pressure B 2 D, S

L 110 F HYBRID TRANSMISSION l 2 -stage Motor – Operation Speed Reduction Device B 1 B 2 B 2 B 1 B 2 MG 2 [Lo Gear] [Hi Gear] B 1 MG 2 9

L 110 F HYBRID TRANSMISSION l Nomographic Chart – Power Split Device MG 1 + 2. 294 rpm, Torque - 1 2294 Sun Gear (MG 1) 10 1000 Carrier (Engine) Ring Gear (Wheel)

L 110 F HYBRID TRANSMISSION l Nomographic Chart – 2 -stage Motor Speed Reduction Device • Lo Gear B 2 B 1 - B 1 B 2 1000 3. 90 rpm, Torque MG 2 1 + Reduction Ratio: 3. 900 11 Carrier (Wheel) Ring Gear (Lo) Front Sun Gear (Hi) 3900 Rear Sun Gear (MG 2)

L 110 F HYBRID TRANSMISSION l Nomographic Chart – 2 -stage Motor Speed Reduction Device • Hi Gear B 2 B 1 - B 1 B 2 1000 1. 9 rpm, Torque MG 2 1 1900 Reduction Ratio: 1. 900 12 Carrier (Wheel) Ring Gear (Lo) Front Sun Gear (Hi) Rear Sun Gear (MG 2) +

L 110 F HYBRID TRANSMISSION l Nomographic Chart – Total nomographic chart B 2 B 1 - + Linked rpm, Torque - + Sun Gear (MG 1) 13 Carrier (Engine) Ring Gear (Wheel) Carrier (Wheel) Ring Gear (Lo) Front Sun Gear (Hi) Rear Sun Gear (MG 2)

L 110 F HYBRID TRANSMISSION Power Split Device MG 1 l Lubrication System – L 110 F has two oil pumps • Mechanical oil pump: Driven by the engine • Electric oil pump: Supplies hydraulic pressure when the engine is stopped Engine Oil Pump Drive Gear Mechanical Oil Pump 14 Electric Oil Pump

L 110 F HYBRID TRANSMISSION l Lubrication System – Electric oil pump is controlled by the oil pump controller in accordance with the signal from HV ECU OPM 1 OPST TOPM Coil Temp. Sensor 15 Motor Speed (Duty Signal) Oil Pump State (Duty Signal) Motor (3 Phase) Oil Pump Controller SIG OPST U V W OH U OH V OH W HV ECU Motor Position Sensor Oil Pump Controller

L 110 F HYBRID TRANSMISSION l Lubrication System – Electric oil pump • Oil pump state signal contains 2 information (motor state information and motor speed information), and these information are sent alternately to the HV ECU OIL PUMP STATE SIGNAL 1 16 2 1 HV ECU 2 1 2 Duty Signal 1: Motor State Info. 2: Motor Speed Info. Oil Pump Controller

L 110 F HYBRID TRANSMISSION l Lubrication System – Electric oil pump • Motor state information / motor speed information Low power supply Controller overheat 1 Controller overheat 2 1, Motor State Info. System malfunction System normal 2, Motor Speed Info. Motor Speed (rpm) 5, 000 4, 000 3, 000 Motor Stop 2, 000 1, 000 0 17 0 10 20 30 40 50 63 71 Motor State Signal to HV ECU (Duty: %) 79 87 95

L 110 F HYBRID TRANSMISSION l Lubrication System – Hydraulic circuit • Both pumps are placed parallel with a check valve to avoid loss of pressure through the inoperative pump S 1 Line Pressure To SL 1 and SL 2 Check Valve Mechanical Oil Pump 18 Electric Oil Pump

L 110 F HYBRID TRANSMISSION l Lubrication System – ATF cooler is used to increase cooling performance. Therefore, the transmission enables high output. Electric Oil Pump Radiator Oil Cooler Inlet Hose Oil Cooler Outlet Hose 19 ATF Cooler

L 110 F HYBRID TRANSMISSION l Solenoid Valve – 3 solenoid valves are used LOWER VALVE BODY Solenoid Valve SL 1 Solenoid Valve SL 2 Solenoid Valve S 1 20

L 110 F HYBRID TRANSMISSION l ATF Pressure Switch – 3 pressure switches are used to detect operation condition of hydraulic unit LOWER VALVE BODY ATF Pressure Switch 1 ATF Pressure Switch 3 ATF Pressure Switch 2 21

L 110 F HYBRID TRANSMISSION l Sequential Shiftmatic System – In the S range, 8 stages of engine braking force can be selected by operating the shift lever. REFERENCE The driver selects the “S” range position by moving the shift lever. At this time, the engine brake range position is selected from the S 4 to S 7 range depending on the vehicle speed. “S” Range 22 -A S 4 -W S 4 0 S 5 S 6 S 5 50 (31) S 7 S 6 100 (62) S 7 150 (93) Vehicle Speed [km/h (mph)] 200 (124) Engine Braking Force Strong Shift Range 0 S 8 (D) S 1 Low S 2 S 3 S 4 Vehicle Speed S 5 S 6 High S 7

L 110 F HYBRID TRANSMISSION Confidential l Sequential Shiftmatic System – The engine brake force control WEEK ENGINE BRAKE FORCE STRONG ENGINE BRAKE FORCE Inverter Engine MG 1 Fuel Cut 23 MG 2 Inverter Engine MG 1 Fuel Cut MG 2

L 110 F HYBRID TRANSMISSION l Sequential Shiftmatic System – This system limits the switching of the engine brake range if the vehicle is cruising at a speed that is higher than the limit speed, and informs the driver by sounding an alarm. ENGINE BRAKE RANGE POSITION S 8 to 7 S S 7 to. S 6 to S 5 to S 4 to S 3 to S 2 to S 1 24 LIMIT SPEED [km/h (mph)] 225 (139, 0) 180 (111, 8) 142 (88, 2) 104 (64, 6) 89 (55, 3) 66 (41, 0) – If the vehicle accelerates from engine brake range position 1 through 5, the engine brake range goes up automatically to position 6 in accordance with the vehicle speed. At this time, the shift range indicator light will also switch.

L 110 F HYBRID TRANSMISSION l Mode Select Switch – Use the pattern select switch to select the driving mode that best suits the driving and road conditions MODE PWR SNOW ACCELERATION CONTROL Motive force generated when the accelerator pedal opening is around the mid range is larger than that in NORMAL mode to enhance the vehicle acceleration. Less motive force is generated than that in NORMAL mode to prevent the wheels from slipping and improve drivability. System Output Normal Mode Select Switch 25 PWR SNOW Accelerator Pedal Opening Angle

L 110 F HYBRID TRANSMISSION l Mode Select Switch – Deceleration control that changes the extent of the engine brake force in accordance with the mode Acceleration select switch is newly adopted. – The PWR mode increases the deceleration rate in order to increase the range of the engine brake force applied through accelerator operation. Mode Select Switch 26 Deceleration 0 Normal / SNOW PWR Vehicle Speed

L 110 F HYBRID TRANSMISSION l Special Notes – Inspection on Service of Hybrid Transmission • If the ATF leak out, replace the hybrid transmission. • The ATF is the maintenance-free type. (except Australia and New Zealand) – ATF adjustment • Transmission requires TOYOTA Genuine ATF WS. • Maintain the vehicle in a horizontal position while adjusting the fluid level. • Transmission requires ATF adjustment when the following cases: – Oil bleed on the transmission – After servicing the transmission • Transmission is replaced, oil cooler hose is reinstalled, ATF is replaced NOTE: 27 L 110 F hybrid transmission is assembly supply part. Therefore, do NOT disassemble the transmission.

L 110 F HYBRID TRANSMISSION l ATF Adjustment Procedure – Outline of ATF adjustment procedure OUTLINE OF ATF ADJUSTMENT 1. Drain and Refill the ATF NOTE: New transmissions are already filled with transmission fluid. CASES ATF Replacement* ATF Leakage (Little bit) 2. ATF temperature check Transmission is replaced Oil cooler hose is reinstalled 28 3. Adjust the ATF level *: Only for Australia and New Zealand models

L 110 F HYBRID TRANSMISSION l ATF Adjustment Procedure – Overflow plug: Adjusting ATF – Oil cooler outlet hose: Refilling ATF – Drain Plug: Draining ATF Front Oil Cooler Outlet Hose Overflow Plug 29 Drain Plug

L 110 F HYBRID TRANSMISSION l ATF Adjustment Procedure – Refill ATF (ATF Replacement) 1. Drain and Refill the ATF 1. Lifts the vehicle 2. Drain the ATF 3. Disconnect the oil cooler outlet hose and remove the overflow plugtemperature check 2. ATF 4. Fill up ATF from the oil cooler outlet hose until overflowing from the overflow plug hole 5. Install the overflow plug 6. Refill ATF from the refill hole* 7. Connect the oil cooler outlet hose 8. Lowering 3. the. Adjust vehicle the ATF level 30 *: Refer to the repair manual for the refill amount

L 110 F HYBRID TRANSMISSION l ATF Adjustment – Fluid temp. check Procedure 1. Connect TC, 1. TSRefill and CG DLC 3 theof. ATF 2. Turn the power switch ON (READY ON state) 3. Shift alternately the shift lever from N to D range 2. ATF temperature check 4. Shift to P range and disconnect terminal TC 5. Warm-up the ATF until the “D” range indicator lights up 31 3. Adjust the ATF level 1. 5 sec. or less P R + N S D “D” Range Indicator D N 6 sec. or more

L 110 F HYBRID TRANSMISSION l ATF Adjustment – Fluid level check Procedure 1. Refill the ATF 1. Check that ATF is a proper temperature 2. Lift up the vehicle with engine running 3. Remove the overflow plug • If ATF will overflows, wait and proceed to the Step 4 • If no ATF overflow, turn the power switch OFF check and 2. add. ATF temperature from the oil cooler outlet hose 4. Install the overflow plug 32 3. Adjust the ATF level Oil Pan Overflow Tube

SERVICE POINT (L 110 F HYBRID TRANSMISSION) l Removal of L 110 F Remove the Engine with L 110 F Separate the Engine and L 110 F NOTICE: Do NOT disconnect the cables at the hybrid transmission. 35