Automatic transmissions are tough, but they can be damaged.
Transmissions have always been complex systems, and they get more sophisticated every year. Even though they are made of metal, wrapped in metal, and capable of moving tons of metal, they can be damaged if mistreated. Cars with automatic transmissions in particular are susceptible to damage in some ways you might not have thought.
Shifting into drive or reverse when not completely stopped is not good for the transmission.
This can be a transmission killer. Even in newer cars with more advanced technology in their automatic transmissions and engines, it’s just a good idea to be fully stopped before making any major gear shifts. In a car with an automatic transmission, shifting into drive or reverse isn’t like changing gears on a manual transmission, where you can disengage the clutch indefinitely. An automatic transmission is designed for rigid, linear operation. It might be full of fluid, but many of its parts consist of gears with teeth that will grind and be damaged if you force your transmission to change gears while moving. Doing so can damage your drive shafts and suspension, too.
Too little or too much fluid – either will damage your transmission.
Letting the transmission run out of fluid is a surefire way of causing some serious damage. That precious red fluid keeps the transmission’s internal parts lubricated and running together smoothly. If that fluid gets low, the parts grind together, overheat, and eventually fail.
Neglecting to change the transmission fluid is a common mistake that damages transmissions.
Failing to change, or at least check, the fluid according to the schedule in your owner’s manual will result in fluid that is not as effective as the transmission needs in order to operate. Just like motor oil, transmission fluid wears out, becomes dirty (in extreme cases, even burned), and has to be changed. Failure to change the fluid can lead to leaky seals, cracked gaskets, and other important parts overheating and breaking down.
Don’t just put your car in park. Use the parking brake.
Your car’s automatic transmission isn’t meant to serve as a mechanism to hold your vehicle in place. Its primary purpose is to move your vehicle, not keep it securely parked. When you put your car in park there is a small part called a “pawl” that holds the weight of the entire car in place. This puts an extreme amount of pressure on this part – especially when parked on an incline. Use the parking brake to alleviate that excess stress on your already hard-working transmission. If you find that your car rolls while in park, you might have some serious transmission problems.
Forgetting to service your transmission can cause permanent damage.
An automatic transmission needs to be tuned every once in a while, just like your engine. If you don’t service your transmission on a regular maintenance schedule, dirt and contaminants will build up and cause your transmission to develop problems over time. Its performance will decrease, parts will wear out more quickly, leaks might occur. Ignore your transmission’s health long enough and one day it will fail outright, probably when you least expect it or can afford it. An ounce of maintenance is worth of a pound of repair.
Related: Why is my Transmission Fluid Leaking [INFOGRAPHIC]
Come to AAMCO Colorado for All Your Car Repairs & Maintenance
You need an experienced transmission specialist who can honestly tell you what needs to be done.
If you have questions about your car’s transmission, engine, repair or maintenance needs, AAMCO Colorado can help. Stop by or call a local AAMCO Colorado repair shop for a Vehicle Courtesy Check for your transmission and related systems. We’ll winterize your car and get you ready for the cold, snowy winter driving months ahead. We can handle all your scheduled car maintenance and repairs, from brakes to factory recommended maintenance.
Other Articles About Car Maintenance & Repair
Change Your Transmission Filter
Benefits of a Transmission Flush
Common Transmission Problems that Spell Trouble
Locally Owned & Operated AAMCO Colorado Transmission Repair Shops
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View Comments (13)
question can a engine damage a transmission
Hi Ronald,
Absolutely an engine's performance and mechanical issues can potentially affect or harm the transmission. They work together in many ways, and a problem in one can spell trouble for the other.
The torque converter is one such element of the engine/transmission relationship that both engine and transmission rely upon.
For more information on how the transmission works, see these articles:
Transmission Problems You Should Not Ignore
My Transmission is Slipping
What Are the Different Parts of a Transmission?
Good luck!
AAMCO Colorado
My step son bought a car from a buy here pay here operation.not soon after the transmission was shot.. trying to return the vehicle, he was told the tranny went because he was late with his engine oil change.ive never heard anything like this .is this possible?
Hi,
Please submit your question through AAMCO Colorado Ask a Mechanic and an AAMCO mechanic will respond.
Thanks!
Your Friends at AAMCO Colorado
Can your breaks effect your car being stuck in reverse? I hit the curbe a little not much and the wheel started rotating fast. When I put the car in reverse to back up from the curb the car did not want to go back to park.
Hi Brandi,
Please submit your question through AAMCO Colorado Ask a Mechanic and an AAMCO mechanic will respond.
Thanks!
Your Friends at AAMCO Colorado
I have an 06 Kia Sedona, got stuck in the snow I managed to get the vehicle unstuck however it was only in 3rd gear on the way home. Fluid was observed where I got stuck after leaving the car overnight I tried to engage the transmission and it wouldn't move upon noticing low fluid level as well as transmission code p p0733 p0734 p0735 incorrect gear ratio I have a lot of wetness towards the back of the transmission am I looking at a full transmission wines seals gaskets? Anyting rather than replacing a new transmission
Christopher,
We know it can be frustrating not knowing what is wrong with your car. AAMCO Colorado is here to help! Unfortunately, we can not diagnose any vehicle over the internet. If you are local to Colorado stop by one of 14 Colorado AAMCO Service centers and we can perform a free diagnostic check on your vehicle where we can access any repair needs your vehicle may have.
Thanks,
AAMCO Colorado
If someone works on a brake system is there any way my transmission can get damaged? Like from a screw driver or hammer. Or something?
Sandy,
While we can't say for sure - it seems unlikely. We suggest asking any specific questions through our Ask a Mechanic feature, and a real mechanic can get back to you soon. Or, if you are local to Colorado stop by one of 14 Colorado AAMCO Service centers and we can perform a free diagnostic check on your vehicle where we can access any repair needs your vehicle may have.
Thanks,
AAMCO Colorado
Help my 1yr old transmission is shot in my 2007 lifted chevy i. Pretty sure my live in boyfriend did something to cause trans fluid to leak.then 3 daya later it starts getting hot and slipping fluid level is over on the dipstick. How do i show proof
Shelia,
Unfortunately, we can not diagnose your vehicle without seeing it in one of our service centers. If you are local to Colorado stop by one of 14 Colorado AAMCO Service centers and we can perform a free diagnostic check on your vehicle where we can access any repair needs your vehicle may have.
Thanks,
AAMCO Colorado
I didn't know that an insufficient amount of fluid can cause your transmission to overheat. My wife and I have been smelling a strange burning odor whenever we drive our children to school in the morning, and we want to take care of the problem before we go on vacation this summer. Now that I know that it could be my transmission, I'll look for a nearby repair facility soon.