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.
Coolant Temperature Sending Unit
Turn ignition off. Using ohmmeter, measure resistance between ground and coolant temperature sending unit terminal. Replace coolant temperature sending unit if resistance is not as specified. See COOLANT TEMPERATURE SENDING UNIT RESISTANCE TEST table. If resistance is as specified, check coolant temperature gauge. See COOLANT TEMPERATURE GAUGE.
| Temperature (1) °F (°C) | Ohms | |||
|---|---|---|---|---|
| Accent | ||||
| 140 (60) | 118 | |||
| 185 (85) | 47.3 | |||
| 230 (110) | 23.4 | |||
| 257 (125) | 15.3 | |||
| Elantra, Sonata & Tiburon | ||||
| 131 (55) | 157 | |||
| 185 (85) | 48.4 | |||
| 230 (110) | 24 | |||
| 257 (125) | 15.2 | |||
|
||||
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra 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.