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.
2004 Lexus IS 300 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Service Data
Automatic Transmission Service Data Table (1 Of 2)
| Line pressure (Wheel locked) | ||
| Idling | ||
| D position | 390 - 460 kPa (4.0 - 4.7 kgf.cm2 , 57 - 67 psi) | |
| R position | 0 | |
| Stall | ||
| D position | 1,200 - 1,360 kPa (12.2 - 13.8 kgf.cm2 , 174 - 196 psi) | |
| R position | 1,640 - 1,960 kPa (16.7 - 19.8 kgf.cm2 , 238 - 282 psi) | |
| Engine stall revolution (D position) | 2,700 ± 150 rpm | |
| Time lag | N → D position | Less than 1.2 seconds |
| N → R position | Less than 1.5 seconds | |
| Engine idle speed (N position and A/C OFF) | 700 ± 50 rpm | |
| Drive plate runout | Max. | 0.20 mm (0.0079 in.) |
| Torque converter clutch sleeve runout | Max. | 0.30 mm (0.0118 in.) |
| Torque converter clutch installation (Correct distance) | More than 0.1 mm (0.004 in.) | |
| Shift schedule (NORM and PWR mode) | ||
| Differential gear ratio 3.909 | ||
| D, 4 position | ||
| (Throttle valve fully opened) | 1 → 2 | 47 - 59 km/h (29 - 37 mph) |
| 2 → 3 | 77 - 88 km/h (48 - 55 mph) | |
| 3 → 4 | 118 - 133 km/h (73 - 83 mph) | |
| 4 → 5 | 168 - 185 km/h (104 - 115 mph) | |
| 5 → 4 | 163 - 176 km/h (101 - 109 mph) | |
| 4 → 3 | 107 - 118 km/h (66 - 73 mph) | |
| 3 → 2 | 60 - 66 km/h (37 - 41 mph) | |
| 2 → 1 | 32 - 38 km/h (20 - 24 mph) | |
| (Throttle valve fully closed) | 4 → 5 | 37 - 43 km/h (23 - 27 mph) |
| 5 → 4 | 21 - 26 km/h (13 - 16 mph) | |
| 3 position | ||
| (Throttle valve fully opened) | 1 → 2 | 47 - 59 km/h (29 - 37 mph) |
| 2 → 3 | 77 - 87 km/h (48 - 54 mph) | |
| 4 → 3 | 123 - 134 km/h (76 - 83 mph) | |
| 3 → 2 | 60 - 66 km/h (37 - 41 mph) | |
| 2 → 1 | 32 - 38 km/h (20 - 24 mph) | |
| 2 position | ||
| (Throttle valve fully opened) | 1 → 2 | 47 - 59 km/h (29 - 37 mph) |
| 3 → 2 | 82 - 90 km/h (51 - 56 mph) | |
| 2 → 1 | 32 - 38 km/h (20 - 24 mph) | |
| L position | ||
| (Throttle valve fully opened) | 2 → 1 | 17 - 22 km/h (11 - 14 mph) |
Automatic Transmission Service Data Table (2 Of 2)
| Shift schedule (SNOW mode) | ||
| Differential gear ratio 3.916 | ||
| D, 4 position | ||
| (Throttle valve fully opened) | 1 → 2 | 35 - 49 km/h (22 - 30 mph) |
| 2 → 3 | 55 - 73 km/h (34 - 45 mph) | |
| 3 → 4 | 84 - 109 km/h (52 - 68 mph) | |
| 4 → 5 | 121 - 151 km/h (75 - 94 mph) | |
| 5 → 4 | 64 - 88 km/h (40 - 55 mph) | |
| 4 → 3 | 38 - 54 km/h (24 - 34 mph) | |
| 3 → 2 | 17 - 31 km/h (11 - 19 mph) | |
| (Throttle valve fully closed) | 4 → 5 | 37 - 43 km/h (23 - 27 mph) |
| 5 → 4 | 21 - 26 km/h (13 - 16 mph) | |
| 3 position | ||
| (Throttle valve fully opened) | 1 → 2 | 35 - 49 km/h (22 - 30 mph) |
| 2 → 3 | 55 - 73 km/h (34 - 45 mph) | |
| 4 → 3 | 123 - 134 km/h (76 - 83 mph) | |
| 3 → 2 | 17 - 31 km/h (11 - 19 mph) | |
| 2 position | ||
| (Throttle valve fully opened) | 1 → 2 | 47 - 59 km/h (29 - 37 mph) |
| 3 → 2 | 82 - 90 km/h (51 - 56 mph) | |
| L position | ||
| (Throttle valve fully opened) | 2 → 1 | 17 - 22 km/h (11 - 14 mph) |
| Lock-up point | (Throttle valve opening 5 %) | |
| 5th gear (D position) | Lock-up ON | 53 - 59 km/h (33 - 37 mph) |
| Lock-up OFF | 52 - 58 km/h (32 - 36 mph) | |
| 4th gear (4 position) | Lock-up ON | 53 - 59 km/h (33 - 37 mph) |
| Lock-up OFF | 52 - 58 km/h (32 - 36 mph) | |
| Flex lock-up point | ||
| (Throttle valve opening 3 %) | ||
| D position (When accelerating) | ||
| 5th gear | Lock-up ON | 37 - 43 km/h (23 - 27 mph) |
| Lock-up OFF | 36 - 41 km/h (22 - 25 mph) | |
| 4th gear | Lock-up ON | 28 - 33 km/h (17 - 32 mph) |
| Lock-up OFF | 27 - 32 km/h (18 - 20 mph) | |
Factory Service Tools
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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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