Delayed engagement on the drive selection.

My car has a delayed transmission engagement on drive it takes 2+ seconds sometimes to catch the gear, it gets even worst when the car is hot, when is gets to running temperature it might take 4+ seconds to engage drive and the delay might even relocate to the reverse gear too, the fluid is pretty new (reddish) and at the right level, the previous owner told me that the car will overheat sometimes due to a bad radiator and had a misfire, I replaced the radiator, I replaced the plugs which caused the misfire and the overheating went away but still has a delayed engagement, I'm planning on c
Experienced mechanics share their insights in answering this question :
Hi there. The forward clutch and the reverse input clutch are slipping before engaging. This can be caused by the fluid being dirty, a dirty oil filter, broken input shaft seals, or sticking valves in the valve body (transmission brain). I recommend performing a transmission oil change and a transmission oil filter change. If the vehicle still hesitates to engage a forward or reverse gear after changing the oil and filter to the transmission, then I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission issue.

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A delayed engagement is a type of slip that occurs when the clutches or bands, which allow the vehicle to move, do not operate instantly. Often, this occurs when the internal seals wear or become hard from infrequent fluid replacement.
Instead of just taking off, your car paused before actually shifting into drive. This delay is known as Delayed Engagement and it`s actually a pretty common issue amongst automatic transmissions. It`s a type of slip where the clutches, used to make the vehicle move, become slow and unresponsive.
Transmission fluid should be checked at least twice each year. Low transmission fluid can cause a delay in shifting and could cause damage to the transmission, leading to expensive repairs.
Delayed engagement is the result of an extended clutch fill time in transmissions having planetary gears and hydraulic shift valves. The torque converters used with these transmissions also maintain torque to the wheels during a sudden acceleration incident, making it harder to stop.
Intelligent networks

The transmission delay t m depends on the transmission rate R, the message length M, and the channel access delay t c a . Wireless Fidelity (WiFi)6 offers high transmission rates, but the channel access delay depends on “listen before talk” with randomized access delay characteristics.

3. Delayed Engagement (Delayed Gear Shift) Delayed engagement is defined as the pause or delay in response that it takes from shifting from Park into a moving gear such as Reverse or Drive. The duration of the delay can be as quick as a few seconds and up to one minute.
Every automatic transmission in the world should engage immediately and with no hesitation. The only time when a slightly delayed engagement is “normal” is in extreme cold. Once the weather warms up, pay attention to your transmission and see if the delayed engagement is gone.
Low fluid levels can cause gears to miss, which will result in a grinding sensation. The occasional slipped gear might seem like a small issue at first, but it`s always a good idea to have the transmission looked at when this occurs to avoid costly repairs in the future.
Trouble or Delay Shifting Gears

If you constantly find gear shifts to be delayed or irregular, a low transmission fluid could possibly be the cause. You can test the delay time by simply shifting into reverse or drive.

In a network based on packet switching, transmission delay (or store-and-forward delay, also known as packetization delay or serialization delay) is the amount of time required to push all the packet`s bits into the wire.
You`ve likely heard of “transmission slipping” before; this term describes what happens when your vehicle slips into a specific gear without matching the applicable speed, and it is most noticeable when your engine revs but you don`t see any increase in speed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

While driving my drive decided not engage when I had to stop
ANSWER : Hello. The traction light is like a check engine light for your steering and suspension system. A technician could use a scan tool to pull any error codes to help pinpoint which component is faulty. I believe the problem your vehicle is having is a faulty shift solenoid. The transmission control module sends a signal to the shift solenoid for the shift solenoid to control the transmission shifting. By you paddle shifting you are basically bypassing the shift solenoid because you are controlling the transmission shifting yourself. If the shift solenoid fails completely you will not even be able to use the paddle shift function. It will be best to have your vehicle inspected by technician as soon as possible. You’re able to find a technician for transmission diagnosis here https://www.yourmechanic.com/services/not-able-to-change-gears-inspection

Delayed engagement on the drive selection.
ANSWER : Hi there. The forward clutch and the reverse input clutch are slipping before engaging. This can be caused by the fluid being dirty, a dirty oil filter, broken input shaft seals, or sticking valves in the valve body (transmission brain). I recommend performing a transmission oil change and a transmission oil filter change. If the vehicle still hesitates to engage a forward or reverse gear after changing the oil and filter to the transmission, then I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission issue.

Why is my 4-wheel drive engaging while I’m driving?
ANSWER : Hey there. Driving with 4×4 on when it is not needed can be rough on the axles, transmission, and hubs. The 4×4 engaging on its own can be the result of a mechanical error or an electrical error.

Mechanically if there is a vacuum leak in the system that engages the 4×4, the hubs can engage automatically if the wheels are rolling. There are other standards that need to be met for this to happen, which is why it is happening under certain conditions. There are a set of vacuum lines that run next to the battery that may need to be replaced.

There are several electrical components that have an effect on the system as well. Any issues like that would likely show on a diagnostic code scan.

If you would like to have this resolved, a certified technician from YourMechanic can come to your car’s location to inspect the transmission and advice you any corrections needed.

Can front wheel drive car engine power rear wheel drive
ANSWER : Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.

Car only drives in first and reverse
ANSWER : What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle speed sensors and engine speed sensors. Based on this information, the Engine Control Unit (ECU), or the Transmission Control Unit (TCM), executes the appropriate upshifts and downshifts by sending a signal to one of several shift solenoids. These transmission solenoids have spring-loaded plungers inside them, which are wrapped with wire. When this coil of wire receives an electrical charge from the TCM / ECU, it causes these plungers to open, allowing transmission fluid to flow into the valve body and pressurize the desired clutches and bands. When this happens, the transmission changes gears and you continue down the road. The computer controls the transmission solenoid in several ways. If the vehicle is equipped with a dedicated Transmission Control Unit, it can open or close the hydraulic circuit using a direct 12v signal. In some cases, the Engine Control Unit (ECU) can control the solenoid’s plunger by turning the ground circuit on and off. When this is not working properly, this can cause a jerking reaction, a delay in shifting or in some cases may cause the transmission to hesitate in shifting gears. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your transmission.

Car does not engage drive when cold, after it warms up shift into drive with no problem. No grinding ect.
ANSWER : The oil pump in your transmission is probably worn out. The oil pump produces the hydraulic pressure that the transmission uses to engage the forward clutch. As the transmission warms up and some of the clearances tighten up, there is just enough pressure to make it work, but soon it probably won’t work at all. If you haven’t changed the fluid and filter, you may be able to extend the life of the transmission some with that service, but eventually you will probably need to get an transmission or an overhaul. To get a hands on opinion, you can contact Your Mechanic They can send a technician to your home or office to check out your transmission problem and tell you for sure what it will take to solve your problem.

Was driving manaul transmission 03 vw golf. When I went to shift from 4th to 5th the gear didn’t engage and after wouldn’t engage
ANSWER : Hello. If the vehicle is still moving when in gear and the clutch pedal released then you may have a broken shift fork or a much more serious internal transmission failure. Typically I will check the shift linkage first to see if it is movable. If not then the transmission will need to be taken apart to repair it. You should have a transmission specialist take a look at it.

Shifting issues from drive to reverse and back to drive
ANSWER : Mercedes has a dealer service order (#Order No: S-B-27.19/118A
) that addresses diagnosis, and possible dealer repair of the transmission for your model. Check with your dealer to confirm coverage of this.