why does my Toyota Corolla E170 (2013-2019) oil light keep coming on

Toyota Corolla E170 (2013-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

4 min read

653 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the oil light issue in your 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before working on it.
•Always disconnect the battery before servicing electrical components.

Symptoms

•Oil pressure warning light illuminated on the dashboard
•Engine noise or ticking sound due to low oil pressure
•Oil leakage visible under the vehicle
•Decreased engine performance or rough idling
•Possible overheating of the engine

Diagnostic Steps

1
Check the engine oil level using the dipstick to ensure it is within the proper range.
2
Inspect for any visible oil leaks around the engine and under the vehicle.
3
Scan the vehicle's computer for any stored error codes using an OBD-II scanner.
4
Test the oil pressure with a mechanical oil pressure gauge to determine if it is within the manufacturer's specifications.
5
Check the condition of the oil filter and ensure it is not clogged.
6
Inspect the oil pump and its associated components for proper operation.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Oil filter wrench
•Oil catch pan
•Funnel
•Mechanical oil pressure gauge

Parts Required

•Engine oil (specific to Toyota specifications)
•Oil filter
•Oil drain plug gasket (if needed)
•Oil pressure switch (if needed)

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Diagnostic Steps

1
Check the engine oil level using the dipstick to ensure it is within the proper range.
2
Inspect for any visible oil leaks around the engine and under the vehicle.
3
Scan the vehicle's computer for any stored error codes using an OBD-II scanner.
4
Test the oil pressure with a mechanical oil pressure gauge to determine if it is within the manufacturer's specifications.
5
Check the condition of the oil filter and ensure it is not clogged.
6
Inspect the oil pump and its associated components for proper operation.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is turned off and cool.
Disconnect the battery for safety.

2. Check and Replace Engine Oil

Sub-steps:
1. Remove the oil filler cap and dipstick.
2. Use a funnel to add the correct type and amount of oil if the level is low.
3. If the oil is dirty or has not been changed recently, proceed to the next step.
Tools Required: Oil filter wrench, oil catch pan, funnel.

3. Change Oil and Oil Filter

Sub-steps:
1. Place an oil catch pan under the engine.
2. Remove the drain plug using a socket set and let the old oil drain completely.
3. Replace the oil drain plug and torque it to the manufacturer’s specification (usually around 30 ft-lbs).
4. Remove the old oil filter using an oil filter wrench.
5. Apply a thin layer of oil to the gasket of the new oil filter and install it.
6. Fill the engine with the appropriate type and amount of new oil via the oil filler cap.
Tools Required: Socket set, oil filter wrench, oil catch pan, funnel.

4. Inspect and Replace Oil Pressure Switch (if necessary)

Sub-steps:
1. Locate the oil pressure switch; it is usually found near the oil filter.
2. Disconnect the electrical connector from the oil pressure switch.
3. Remove the switch using a socket or wrench.
4. Install the new oil pressure switch and reconnect the electrical connector.
Tools Required: Socket set, wrench.

5. Recheck Oil Pressure

Sub-steps:
1. Reconnect the battery.
2. Start the engine and allow it to idle.
3. Use a mechanical oil pressure gauge to check if the oil pressure is within specifications while the engine is running.
Tools Required: Mechanical oil pressure gauge.