If you have used the brakes it is BAD! Your will have to at least replace the master cylinder or even the porporting valve and or ABS valve depending on year and model of vehicle the Transmission Fluid will damage the seals and brakes will be spongey or even worse not work. DO NOT DRIVE VEHICLE. I you have not applied the brakes it can be repaired easelly get a turkey baster or some kind of suction device to remove the fluid from reservoir (get all you can get out), fill half full with proper brake fluid DOT 4 or 5 if vehicle is 2004 or newer use DOT 5, if older you can use DOT 4. Suck out fluid again and refill to full level on reservoir.
Have it cleaned out and flushed immediately
You need to get the trans fluid changed immediatley
Do not drive the car. Have it towed to a repair shop and have the brake fluid changed.
The brake system uses brake fluid and the trans uses trans fluid.
Accidentally pouring transmission fluid into the brake fluid reservoir is a serious mistake and can have detrimental effects on your vehicle's braking system. Transmission fluid and brake fluid serve completely different purposes and have distinct properties. Transmission fluid is designed for lubricating and cooling the transmission components, while brake fluid is crucial for the proper functioning of the braking system. Brake fluid is a hydraulic fluid that transmits force within the brake system, and it has specific properties to withstand high temperatures. If transmission fluid is added to the brake fluid reservoir: Loss of Brake Functionality: Transmission fluid is not suitable for use in the brake system, and it lacks the necessary properties for hydraulic braking. Mixing the two can compromise the integrity of the brake fluid, leading to a loss of braking functionality. Damage to Brake Components: Brake seals, hoses, and other components are not designed to handle transmission fluid. The introduction of transmission fluid can lead to damage to these components, resulting in brake system failure. Reduced Braking Performance: Transmission fluid may cause the brake fluid to become less effective, leading to reduced braking performance. This compromises the safety of the vehicle and increases the risk of accidents. If such an error occurs, it is crucial to address it immediately: Do Not Drive: Refrain from driving the vehicle as compromised brake functionality poses a significant safety risk. Professional Inspection: Seek the assistance of a qualified mechanic to inspect and flush the entire brake system. Flushing involves removing the contaminated fluid and replacing it with the correct brake fluid. Component Replacement: Depending on the severity of the contamination, brake components may need to be replaced to ensure the safety and reliability of the braking system. In summary, mixing transmission fluid with brake fluid can lead to severe consequences, and it is essential to rectify the mistake promptly by seeking professional assistance to prevent safety hazards and potential damage to the vehicle.
If it looks like a smaller version of the brake cylinder container it is the hydraulic clutch reservoir ( assuming you have a manual ) and you will fill it with brake fluid.
You failed to mention what fluid you accidentally put in. In any case, have the transmission fluid flushed out and replaced with the proper ATF right away.
The transmission will fail.
Not in the transmission , but the hydraulic clutch on a Ford Ranger uses DOT 3 brake fluid
brake fluid container right side behind battery.
go to a mechanic immediately
NO !