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.
Service LTPWS Indicator
SERVICE LTPWS indicator will illuminate when one or more wheel sensors have not sent a signal to receiver/control module within a specified amount of time (diagnostic cycle) determined by receiver/control module.
On 1987-90 models, when SERVICE LTPWS indicator is illuminated, system will need to be diagnosed by appropriate trouble shooting description. See TROUBLE SHOOTING .
On 1991-96 models, when SERVICE LTPWS indicator is illuminated, a corresponding DTC will set indicating faulty sensor. To retrieve DTCs, see RETRIEVING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. SERVICE LTPWS indicator will turn off after ignition switch is cycled and all wheel sensors send a signal to receiver/control module during next diagnostic cycle. DTCs will remain in receiver/control module until manually cleared. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM.
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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.