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 Isuzu Rodeo 2WD L4-2.2LFACTORY OEM SERVICE PROCEDURE
Keyless Entry: Testing and Inspection
ID Code Registration
The following procedures are available to register keyless entry ID codes.
There are four different ID codes which can be registered for each vehicle.
ID Code New Registration
This procedure erases all registered ID codes and registers a new ID code instead.
ID Code Additional Registration
This procedure additionally registers a new ID code with holding registered ID codes. If total number of registered ID codes and newly registered ID code exceed four, the oldest one is erased.
ID Code Check
This procedure checks how many ID codes are registered.
Answer Back (Anti-theft Horn Operation) Change Mode
The anti-theft horn sounds when the doors are locked or unlocked by the keyless entry transmitter operation when the answer back function is ON, and the horn does not sound when the function is OFF.
The following procedures are available to register keyless entry ID codes.
There are four different ID codes which can be registered for each vehicle.
ID Code New Registration
Steps 1 - 9:
This procedure erases all registered ID codes and registers a new ID code instead.
ID Code Additional Registration
Steps 1 - 9:
This procedure additionally registers a new ID code with holding registered ID codes. If total number of registered ID codes and newly registered ID code exceed four, the oldest one is erased.
ID Code Check
Steps 1 - 5:
This procedure checks how many ID codes are registered.
Answer Back (Anti-theft Horn Operation) Change Mode
Step 1 - 5:
The anti-theft horn sounds when the doors are locked or unlocked by the keyless entry transmitter operation when the answer back function is ON, and the horn does not sound when the function is OFF.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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