Engine compartment [Toyota Highlander XU20]

Engine compartment on the four-cylinder variant (typical)
1. Relay box
2. Brake hydraulic fluid reservoir
3. Air filter housing
4. Battery
5. Transmission fluid dipstick
6. Upper radiator hose
7. Radiator cap
8. Engine oil level dipstick
9. Engine oil filler cap
10. Windshield washer reservoir
11. Expansion tank of the cooling system
12. Power steering fluid reservoir

Engine compartment on the V6 variant (typical)
1. Battery
2. Transmission fluid level dipstick
3. Radiator cap
4. Dipstick for measuring engine oil level
5. Upper radiator hose
6. Windshield washer reservoir
7. Expansion tank of the cooling system
8. Power steering fluid reservoir
9. Engine cover (remove to access spark plugs)
10. Engine oil filler cap
11. Relay box
12. Brake hydraulic fluid reservoir
13. Air filter housing
14. Main Relay/Fuse Box