Why is my car fan always running and draining the battery?
SHould even be labeled in the handbook shown with all the other under bonnet fuses. Taking it out will prevent the battery going flat while the car is parked, but be sure to put it in before you set off, as getting stuck in trafic or anytime the engine is running and you arent moving through the air will have you overheat and damage the engine.
How can I Stop my Fan from draining my battery?
In the short term you could just remove the fuse to the fan to stop the battery draining but keep a very close eye on the temp gauge as there is a high risk of overheating without the fan.
Why does my fan keep running all the time?
IIRC the temperature signal comes via the ECU. The normal failure mode is for the slow speed running (with air con on) to fail causing the fans to pulse and eventually blow a fuse. This is caused by a resistor in the controller burning out although from your symtoms it sounds as if something has short circuit keeping the fan on all the time.
What to do if your car fan is not working?
Regard the fans not working at all any more, when you have a moment run the engine for 15 20 mins or so until its up to temperature. KEEP A CLOSE EYE ON THE GAUGE. When it gets hot the fans should run. If they dont, then they have completely given up and you will have to be carefull when driving the car until it is fixed.
Why does my car fan run after Turner off?
Fan runs after car is turner off drains the battery. After having my battery replaced, I noticed my engine light was on and my fan was running “hard”. It also runs for 10 seconds after my car is turned off. Diagnostics stated “cooling system malfunction”.
Is it normal to hear a fan running in a car?
Once outside the car, she could hear a fan running in the engine area and asked us if this is normal. It is. And many other sounds from under the hood of a car that has been shut off are also normal. Here is a quick rundown of the things you might hear other than the ticking of cooling metals.
Why does my bike fan not stop running?
At times the battery (6 volt) would be near dead in one hour after shutting the bike off. The problem was a sticking set of points in the voltage regulator that voltage ran through from the gen. to the batt. The points were supposed to pop apart to prevent battery drain back through the regulator/generator.
How long does it take for a car fan to kick off?
Usually the fan will kick off after 5 minutes or so, depending on a number of factors. If you’re using one of those hand-carried battery chargers you must always disconnect it before starting an engine unless it’s a heavy duty charger with a boost function.
Why are the cooling fans not working on my car?
Many other issues can cause the engine to run hot or overheat. Rather than uncommonly high engine temps, the driver may notice that the cooling fans have stopped running. A faulty or broken relay cannot deliver power to the cooling fans. In turn, the unpowered fans won’t run, leaving the radiator to its own devices.
When to turn on the cooling fan relay?
The cooling fan relay is an electromagnetic switch that controls the power supply to the engine’s cooling fans. It ensures that the energy-intensive devices only run when needed, usually when the vehicle is immobile. When the engine temperature approaches unsafe levels, the vehicle’s computer or temperature switch turns on the cooling fan relay.
What to do if your cooling fan won’t stop running?
The fan will discharge the battery quickly if left running. Open the hood and locate the fuse relay box on the driver’s fenderwell. Remove the lid. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one.
What causes a cooling fan relay to stop working?
Cooling fan relays can stop working for any number of reasons. Common causes for relays going bad include: There are several ways to tell if a bad cooling fan relay is to blame for an overheated engine. The easiest method is to start the engine and then turn on the air conditioning.
Why is my radiator fan not turning on?
The computer sends power to the relay to activate it and turn the fan on. Once activated, however, if the relay sticks in the closed position then the fan will run until the battery is totally discharged.
When does a computer turn on a cooling fan?
When the temperature exceeds a specific value — usually 215 degrees Fahrenheit — the computer will turn the fan on. The operating components in the cooling fan circuit include the cooling fan fuse, relay, coolant temperature sensor and the computer.
SHould even be labeled in the handbook shown with all the other under bonnet fuses. Taking it out will prevent the battery going flat while the car is parked, but be sure to put it in before you set off, as getting stuck in trafic or anytime the engine is running and you arent moving through the air will have you overheat and damage the engine.
How long does an electric water pump last?
Q: My Electric water pump on my 2014 320i BMW runs constantly after shutdown. Drains the battery dead after about five hours. What My Electric water pump on my 2014 320i BMW runs constantly after shutdown. Drains the battery dead after about five hours. What controls the water pump’s on/off.
Why does MY BMW water pump keep running?
The temperature sensor tells the water pump there is a demand for it to circulate coolant based on engine temperature. The relay acts as the on/off switch to send power to the pump. Either of these can be at fault. The sensor may not be registering temperature correctly so it is constantly calling for the pump to run.
In the short term you could just remove the fuse to the fan to stop the battery draining but keep a very close eye on the temp gauge as there is a high risk of overheating without the fan.