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.
2003 Lexus LX 470FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Splices
SPLICES LOCATION
| Component | Component Location |
|---|---|
| B1 | In body harness, in left front door. |
| B2 | In body harness, in left front door. |
| B3 | In body harness, at kick panel, near middle of left front door. |
| B4 | In body harness, at kick panel, at rear of left front door. |
| B5 | In body harness, at center of windshield header. |
| B7 | In body harness, in right front door. |
| B9 | In body harness, at kick panel, at rear of right front door. |
| B10 | In body harness, above left rear wheelwell. |
| B11 | In body harness, under rear seat. |
| B12 | In body harness, at center of roof. |
| B13 | In body harness, above right rear wheelwell. |
| B14 | In body harness, in tailgate. |
| B15 | In body harness, behind middle of rear bumper. |
| B17 | In body harness, at right rear of luggage compartment. |
| B21 | In body harness, below left front seat. |
| B22 | In body harness, at left rear quarterpanel. |
| B23 | In body harness, below right front seat. |
| B24 | In body harness, at right rear quarterpanel. |
| B25 | In body harness, at right rear corner of vehicle. |
| B26 | In body harness, below right front seat. |
| E1 | In engine harness, behind right headlight. See Figure. |
| E2 | In engine harness, at right rear of engine compartment. See Figure. |
| E4 | In engine harness, at right rear of engine. See Figure. |
| E5 | In engine harness, on top of transmission. See Figure. |
| E6 | In engine harness, on top of transmission. See Figure. |
| E7 | In engine harness, at top left of engine. See Figure. |
| E8 | In engine harness, at left rear of engine compartment. See Figure. |
| E9 | In engine harness, at left side of engine compartment. See Figure. |
| E10 | In engine harness, behind left headlight. See Figure. |
| I2 | In dash harness, behind left side of dash. See Figure. |
| I3 | In dash harness, behind left side of dash. See Figure. |
| I4 | In dash harness, behind left side of dash. See Figure. |
| I6 | In dash harness, behind left side of dash. See Figure. |
| I15 | In dash harness, behind right side of dash. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.