Why does my car make a buzzing noise when the engine is turned off?
Buzzing noise even though it’s turned off! EDIT: found the answer to this one on page 8 of the manual (doh!) “Approximately five hours after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction”
Why do I hear a noise when I start my Mercedes?
The electric water pump in Mercedes vehicles, as far as I know, is used to pressurize the cooling system from the reservoir bottle used these days. It’s one of the noises you hear when first inserting your key to start. Welcome to the GLA forum Red. That’s one of the best theories or explanations we’ve heard.
Is it normal to hear noises after shutting off the engine?
Noises that occur in your car once the engine is off can be relatively normal, depending on the location and nature of the sounds. Recording or taking video of the problem can be helpful for your trusted automotive specialist to properly diagnose the problem.
Why is my Toyota Highlander making a buzzing noise?
After some investigation, I isolated the noise as coming from the Highlander itself, even though it had been sitting parked and turned off for roughly 5.5 hours. The noise was loudest underneath the vehicle and it stopped when I popped the hood (although there may not be a direct cause/effect between the noise stopping and the hood opening).
Buzzing noise even though it’s turned off! EDIT: found the answer to this one on page 8 of the manual (doh!) “Approximately five hours after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction”
The electric water pump in Mercedes vehicles, as far as I know, is used to pressurize the cooling system from the reservoir bottle used these days. It’s one of the noises you hear when first inserting your key to start. Welcome to the GLA forum Red. That’s one of the best theories or explanations we’ve heard.
Noises that occur in your car once the engine is off can be relatively normal, depending on the location and nature of the sounds. Recording or taking video of the problem can be helpful for your trusted automotive specialist to properly diagnose the problem.
Why does my C-300 sport make a buzzing noise?
I noticed that until several hours after driving my 2009 C-300 Sport (manual with Entertainment package) I can hear a brief buzzing noise, about once every 30 seconds or so, that seems to originate from the engine compartment. Have not been able to pinpoint the source of this noise.
Why does my car make a clicking sound when the battery is low?
Most cars have a load reduction relay, and there may be others as well, that apply power only when the ignition is on. Usually the clicking sound happens when the battery is very low, so it is a bit puzzling that you’re hearing this when the battery seems to get good.
What are the symptoms of a bad ECM power relay?
A bad relay may cause the vehicle to crank, but not start, or sometimes not even crank at all. 3. Battery drain or dead battery. A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off.
What are the symptoms of a bad ignition relay?
Symptoms of Bad Ignition Relay 1 Ignition Unresponsive. 2 Engine Stalling. 3 Dead Battery. 4 Fried Relay. 5 Intermittent Starting Issues. 6 Clicking Coming from Relay. 7 Unresponsive Fuel Pump. 8 Loss of Power. 9 Engine starts for a few seconds. 10 No Noise from Fuel Pump. …
Why is my Fuse Box making a clicking noise?
This can be caused by a computer failure, resistance in the ground wire for the control side of the relay or high resistance in the power supply to the control side of the relay. To find out the source of the problem, you’ll need to run some quick tests using a multimeter.
After some investigation, I isolated the noise as coming from the Highlander itself, even though it had been sitting parked and turned off for roughly 5.5 hours. The noise was loudest underneath the vehicle and it stopped when I popped the hood (although there may not be a direct cause/effect between the noise stopping and the hood opening).
What are the signs of a bad starter relay?
Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter. Alternator – The alternator is designed to power all of your car’s electrical systems when the vehicle is running. It also recharges the battery.