How do you check the transmission fluid on a 2018 Kia Soul?

For many 2018 Kia Soul models with a traditional automatic transmission, you can check the fluid level yourself if a dipstick is present; some trims use a dipstickless system that requires dealer service to verify the level. In either case, following the manual and using the correct fluid type is important for transmission health.

Does your Soul have a transmission dipstick?

Not all 2018 Kia Soul variants carry a transmission dipstick. The presence of a dipstick depends on the specific transmission configured for your trim. If you can locate a bright dipstick handle labeled ATF near the transmission, your car uses a dipstick you can read at home. If there is no dipstick, the level must be checked by a trained technician at a service facility.

• Look under the hood for a dipstick with a colored handle (often red) labeled ATF near the transmission. If you find it, you have a dipstick the fluid level can be checked with.


• If there’s no visible dipstick or you can’t locate one, your Soul is likely dipstickless and will require service to verify the transmission fluid level.


• Always verify the specification in your owner’s manual or with a Kia dealer to confirm whether your exact vehicle uses a dipstick.

In either case, knowing whether your model has a dipstick helps you decide if DIY checking is possible or if you should book a service appointment for a precise level check.

Checking transmission fluid with a dipstick

If your 2018 Kia Soul is equipped with a transmission dipstick, follow these steps to check the level safely and accurately.

1. Park on a level surface and engage the parking brake. Keep the engine idling and the gear selector in Park (P).


2. Allow the transmission to reach normal operating temperature (the fluid should feel warm, not hot to the touch).


3. Open the hood and locate the transmission dipstick (often labeled ATF).


4. Pull the dipstick out, wipe it clean with a lint-free rag, reinsert it fully, then pull it out again to read the level.


5. Check the fluid level against the markings on the dipstick. The level should be between the “Full” and “Add” marks when the fluid is at the correct temperature.


6. If the level is low, add the recommended automatic transmission fluid in small amounts (a little at a time) through the dipstick tube using a funnel. Do not overfill.


7. Reinsert the dipstick, start the engine again if you turned it off, and recheck the level once more. If needed, add a little more fluid until the level is within the proper range.

Keep in mind that what you’re reading is the temperature-dependent level: the dipstick showed readings at the correct warm temperature. If the fluid looks dark, granular, or smells burnt, replace the fluid and consider a filter change per the service manual or seek professional service.

What to do if your Soul has no dipstick

If your 2018 Kia Soul does not have a transmission dipstick, you cannot reliably check the level at home. In this case, follow these guidelines to manage maintenance and know when to seek service.

• Refer to the owner’s manual or dealer for the recommended service interval for transmission fluid inspection and possible replacement.


• If you notice symptoms such as slipping, harsh or delayed shifting, or unusual noises, schedule a service appointment promptly; these can indicate low fluid or other transmission issues.


• Have a certified Kia technician check the transmission level using the proper procedures and equipment. They will verify fluid temperature, level, and condition and perform any necessary top-ups or changes.

Because dipstickless transmissions rely on precise temperature and level readings, DIY checks without the correct tools can lead to incorrect readings or spills. Rely on professional service when in doubt.

Transmission fluid type and general care

Using the correct fluid and maintaining proper levels are key to transmission longevity. Here are practical guidelines to keep in mind for a 2018 Kia Soul.

• Fluid type: Use the transmission fluid recommended by Kia for your model (often Dexron VI or a Kia-approved equivalent). If in doubt, consult the owner's manual or a dealership to confirm the exact specification.


• Fluid color and smell: Fresh ATF is pink to red and fairly clear. If it’s dark, cloudy, or smells burnt, it likely needs replacement or a diagnostic check.


• Temperature matters: When checking with a dipstick (if equipped), readings should reflect the fluid at the proper operating temperature. Do not read a cold or overheated system.


• Avoid mixing fluids: Never mix different ATF types in your transmission. If topping up, use the exact fluid type recommended for your vehicle.


• Maintenance approach: Many Kia transmissions are designed to last with proper service intervals rather than frequent fluid changes. Follow the maintenance schedule in your owner’s manual and consult a technician for guidance on replacement intervals based on driving conditions.

Being mindful of these considerations helps protect the transmission from wear and potential damage, extending the life of your vehicle’s drivetrain.

Summary

In short, check your 2018 Kia Soul for a transmission dipstick to determine whether DIY fluid checks are possible. If you have a dipstick, follow the steps to read the level when the fluid is at the proper temperature and top up as needed with the correct ATF. If there is no dipstick, rely on a Kia-certified technician to check level and condition using the proper equipment. Always use the fluid type specified in the manual, monitor the fluid’s color and odor, and adhere to the manufacturer’s maintenance schedule for best results.