Why is my electronic throttle control warning light lit up? What can I do?
When you turn your vehicle on, a number of warning lights on your dashboard, including the throttle control warning light, is lit up for about a couple of seconds or so. If the light doesn't turn off, there is a problem. If you can still drive your Mercury Milan, have it checked by your trusted auto mechanic. A problem is probably brewing on your electronic throttle control (ETC) system, and it might come to a point that your car will not be drivable anymore. If the throttle control warning light comes on and the throttle response in your car is inconsistent at the same time, it is best to have your Milan towed as it is dangerous to drive your car in that condition.
Do not attempt to jump start your car's dead battery since the high voltage from jump starting your battery can corrupt and damage the electronic throttle control computer. Instead, let the ETC gather power slowly by taking out the key from the ignition.
Why do my rear brake lights stay on? What do I do with it?
The most common cause of the brake lights staying on is a faulty brake light switch. The switch continues to supply power to the lights if the contacts are stuck together, even when it is released. Fixing this problem is as easy as replacing the defective switch with a new one. Before changing the switch, check if it can be tested. If you have the knowledge on your car's systems, you can do it yourself.
Why is my transmission shifting hard?
If your Milan's transmission is shifting hard, you should check your transmission fluid first. The problem may be fixed just by adding transmission fluid if the level is too low. However, if this happens repeatedly, it is highly possible that there's a leak in the transmission system. You are going to need the help of a professional to fix this problem. The problem can also be caused by a clogged transmission fluid filter. If you have never replaced your transmission fluid filter, have it changed on your next car maintenance service schedule. If you notice that there's no leak and that the transmission fluid filter is still clean, then you might want to check the pump. If the pump is not maintaining the fluid pressure, the transmission system will not function properly or will not function at all.
Why does my engine stall and go on safe mode?
For your engine to run smoothly without stalling, it needs to have the right ratio of air and fuel, a good spark, and an adequate idle speed for idle load. If one or more of these are lacking, you can very well expect your engine to stall. A defective mass airflow (MAF) sensor can cause your engine to stall. The MAF sensor usually fails because of air filter that is not installed properly or if it is too dirty. Your car goes into safe mode to prevent further damage if it detects a problem in the engine.