Lexus NX: Under Hood
General Maintenance
GENERAL MAINTENANCE
PROCEDURE
1. GENERAL NOTES
- Maintenance requirements vary depending on country.
- Check the maintenance schedule in the owner's manual.
- Following the maintenance schedule is mandatory.
- Determine the appropriate time to service the vehicle using either miles driven or time (months) elapsed, whichever reaches the specification first.
- Maintain similar intervals between periodic maintenance unless noted.
- Failing to check each maintenance item could lead to poor engine performance and increased exhaust emissions.
2. WINDSHIELD WASHER FLUID
(a) Check that there is sufficient fluid in the tank.
3. ENGINE COOLANT LEVEL
(a) Check that the coolant level is between the "FULL" and "LOW" lines on the see-through reservoir.
4. INVERTER COOLANT LEVEL
(a) Check that there is sufficient fluid in the tank.
5. RADIATOR AND HOSES
(a) Check that the front of the radiator is clean and not blocked by leaves, dirt and bugs.
(b) Check the radiator and hoses for:
- Damage
- Cracks
- Kinks
- Corrosion
- Rot
- Clogging
- Leaks
6. BRAKE FLUID LEVEL
(a) Check that the brake fluid level is near the upper level line on the see-through reservoir.
7. ENGINE DRIVE BELT
(a) Check the drive belt for fraying, cracks, wear or oil.
8. ENGINE OIL LEVEL
(a) Check that the engine oil level is between the full level and low level marks on the dipstick with the power switch off.
9. HYBRID TRANSAXLE FLUID LEVEL
(a) Check the level of the hybrid transaxle fluid.
Click here 
10. EXHAUST SYSTEM
(a) Visually inspect for severe corrosion, cracks, holes or loose supports.
HINT:
If any change in the sound of the exhaust or smell of the exhaust fumes is noticed, inspect and repair the exhaust system.
READ NEXT:
Procedure
PROCEDURE PROCEDURE 1. CUSTOMIZE DYNAMIC RADAR CRUISE CONTROL SYSTEM Click here 2. CUSTOMIZE LANE TRACING ASSIST SYSTEM Click here 3. CUSTOMIZE ROAD SIGN ASSIST SYSTEM Click here 4. CUSTOMIZE AD
SEE MORE:
Hybrid Battery Voltage Isolation Sensor Circuit (P0AA7-727)
DESCRIPTION The hybrid vehicle control ECU monitors the insulation monitoring circuit located in the battery voltage sensor and detects malfunctions. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0AA7-727 Hybrid Battery Voltage Isolation Sensor
Software Incompatibility with Brake System Control Module Not Programmed (U031851)
DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake booster with master cylinder assembly), the forward recognition camera stores DTC U031851. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
