![]() ![]() It’s putting itself in a worst-case scenario to protect its powertrain from further damage. Limp Mode is when your car limits its top speed and acceleration. Other Dashboard Warning LightsĪ transmission light could be accompanied by others, such as the Check Engine icon. If anything seems different with the noise it makes, it could be the transmission. ![]() Vibrations, Clunks, And Other Discouraging SoundsĪs the main driver of your car, you’ll know what it usually sounds like. If the level is low, you might have a leak. The dipstick should show a safe level of red transmission fluid.īrown or black fluid – or if it has particulate matter in it – means it’s old and needs a flush. Consult your owner’s manual if you need help determining which one this is. Dirty Or Low Transmission FluidĬheck your ATF using the dipstick under the hood. This includes changing up or down while accelerating, but also between Drive, Reverse, and Park when stationary. Rough ShiftingĬlunky, heavy, hesitant, or noisy gear changes are the most clear-cut sign of a breaking transmission. This needs to be investigated using an advanced OBD code reader found at a professional shop. Something has still caused the light to come on. You might not notice anything else at all. This isn’t an exhaustive list, and whether you notice any or not, you must still go to a mechanic. In this section, I’ll run through the symptoms you might expect to see alongside a transmission warning light. Transmission Light Comes On: Accompanying Symptoms It might also represent an issue with related components or sensors. The light could indicate something wrong with the transmission itself. Thus, you know there’s a problem that needs your immediate attention. If necessary, these features combine to activate the transmission warning light. Electronics and hydraulics control the gear changes. ![]() On top of this basic functional setup, they’re fitted with loads of different sensors. Still with me? That’s all you need to know for now! The video I’ve attached above explains it in much more detail. In fact, I think most mechanics would agree with me when I say engine rebuilds are easier!Ī system of clutches, planetary gears, and ring gears is linked with input and output shafts.Ĭhanging the active and passive gears produces diverse ratios between the speed of the engine (input) and the speed of the wheels (output). I’ll sum it up for you as briefly as possible: they’re complicated. It’s the best simple explanation I can find. I’ve used this video from Lesics (on YouTube) in a few other articles, and with good reason. You’ll find the answer soon enough! How Does A Car’s Transmission Work? If you need clarification on what a particular dashboard warning light means, check your owner’s manual or do a quick Google search. The appearance of the transmission warning light varies between manufacturers. It depends on how the vehicle was designed! You may or may not find a transmission warning light with electric cars. You need to detect any shifting issues yourself. Transmission warning lights are (in general) only found on vehicles with automatic transmissions.Ĭars with a manual (‘standard’) gearbox don’t have a warning light. What Cars Have A Transmission Warning Light? Be ready to pull over and ring for help if the situation calls for it. In case the light remains constant, it could be acceptable to drive there.ĭespite this, use common sense. To say it differently, if you notice a blinking transmission caution light, it suggests that you should be transported to the transmission store on a flatbed tow truck. In contrast, a steady light (one that’s on constantly) means there’s a problem that needs attention, but it’s not an immediate threat. As in, you must pull over to the side of the road and stop your engine. Why Is My Transmission Light Blinking?Ī blinking transmission light represents immediate danger. Issues could also arise from related systems or sensors. In turn, this causes the light to illuminate. This has caused a code to be stored in the ECU’s TCM (transmission control module). Your transmission light is on because there’s something (and it could be anything!) wrong with the transmission.Ī sensor has noted an anomaly (one-off or consistent). Unfortunately, that’s not quite how this is going to work. You want a more direct answer so you can decide how to proceed. ![]()
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