2010 Honda Accord Crosstour
Battery light illuminated. Loud noise coming from driver side engine bay. I do not hear the noise when driving in excess of 30 mph .
My car has 115000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello.
The battery light is usually activated when the computer detects that the system voltage is low. The most common cause for this is a faulty alternator or battery. The alternator is the component that provides the power for the vehicle’s electrical system once the engine is started. If it goes bad or has an issue it may set off the light due to low voltage. In most cases a faulty alternator will eventually lead to a dead battery, and stalling, if the engine is running when the battery dies. The alternator is driven by the engine’s serpentine belt, which could be a possible explanation for the noise.
There are also cases where a bad battery can also cause the battery light to come on. The battery serves as a stabilizer for the electrical system, and can cause the light to come on if it fails or has an issue such as a bad cell, or poor connection. As there is the potential for stalling, and even leaving the vehicle stranded, I would recommend having a professional technician, such as one from YourMechanic, visit your location to determine what the exact cause of the illuminated battery light.
How to Identify and Fix Common car Problems ?
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The battery light is usually activated when the computer detects that the system voltage is low. The most common cause for this is a faulty alternator or battery. The alternator is the component that provides the power for the vehicle`s electrical system once the engine is started.
The car battery light might come on for many reasons, but generally, the reasons are: An old car battery. Car battery connections that are corroded. Car battery cables that are misconnected.
The battery light is an indication that something in your charging system is not working properly such as a weak battery (usually noticeable with a weak start), a failing alternator or a bad voltage regulator. The whining sound may be the alternator failing which is common when this happens.
What does it mean when the battery light comes on and then goes off when starting a Honda Accord? It means, the heavy current draw of the starter motor is causing the battery voltage to drop below the point that the warning light comes on.
The electronic battery sensor is an important part of the vehicle energy management. The sensor informs the car of the exact battery status, measures the temperature and controls the charging voltage and charging current accordingly.
The battery light on your car dashboard signals a charging problem with your car battery. If the light turns and stays on, it might be that your alternator isn`t generating enough voltage to charge it. Common causes can be a broken alternator belt, damaged battery cells or a failed alternator.
The red battery light could indicate a problem with the alternator, battery or other parts of the electrical and charging system in the car. It could be a minor problem such as a malfunction rectifier unit, blown fuse or cabling short circuit.
Your battery light, also called the dashboard battery indicator, is designed to let you know about an issue with your vehicle`s battery or charging system. It could indicate that your battery is damaged or worn out, or that the charging system is malfunctioning in some way.
The Likely Culprit: Starter
If you`re unable to start your vehicle, check and see if the headlights and dash lights come on. If they shine bright and clear, that means that the battery and alternator are likely not the cause of the problem. If they were, there wouldn`t be enough power to run the lights.
The battery light on your car dashboard signals a charging problem with your car battery. If the light turns and stays on, it might be that your alternator isn`t generating enough voltage to charge it. Common causes can be a broken alternator belt, damaged battery cells or a failed alternator.
An illuminated battery light could be due to a number of issues, including: A loose or corroded battery cable. A problem with the alternator or voltage regulator. Damaged cells or plates inside the battery.
The battery light on your car dashboard signals a charging problem with your car battery. If the light turns and stays on, it might be that your alternator isn`t generating enough voltage to charge it. Common causes can be a broken alternator belt, damaged battery cells or a failed alternator.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Battery light goes on when I start car then turns off, if I rev engine light comes back until rpms go down. Abs goes comes on/off
ANSWER : Batteries can die due to faults in the charging system so ideally a suspected "faulty" battery should be load tested before a decision is made to condemn it. The only exception to this rule is if the battery is already clearly "old" (greater than 5 years) but even then once you put a new battery in, as a replacement for a "dead" battery, you have to comprehensively check out the charging system. Diagnostic Trouble Code P0460 will result in disruption of the dashboard fuel gauge’s ability to accurately report your tank’s fuel levels. The fuel gauge readings may be erratic, or read somewhere off scale. Vehicles equipped with a low fuel warning light feature may also suffer from erratic low fuel warnings in the event of a code P0460. Unless the P0460 code has been reported alongside other trouble code, all of the vehicle’s essential systems should otherwise function normally. I would recommend that you request a check engine light diagnostic to first resolve the fault causing the P0460 code to set. The check gas cap light warning light could be due a faulty gas cap and/or small leaks in the EVAP system.
2010 Honda Accord Crosstour – battery light is illuminated and there’s a whining noise coming from the engine. Is this the alternator?
ANSWER : Hello.
The battery light is usually activated when the computer detects that the system voltage is low. The most common cause for this is a faulty alternator or battery. The alternator is the component that provides the power for the vehicle’s electrical system once the engine is started. If it goes bad or has an issue it may set off the light due to low voltage. In most cases a faulty alternator will eventually lead to a dead battery, and stalling, if the engine is running when the battery dies. The alternator is driven by the engine’s serpentine belt, which could be a possible explanation for the noise.
There are also cases where a bad battery can also cause the battery light to come on. The battery serves as a stabilizer for the electrical system, and can cause the light to come on if it fails or has an issue such as a bad cell, or poor connection. As there is the potential for stalling, and even leaving the vehicle stranded, I would recommend having a professional technician, such as one from YourMechanic, visit your location to determine what the exact cause of the illuminated battery light.
I have Chrysler 300c. Battery light came on, changed battery and alternator but power still getting drained and battery light still comes on.
ANSWER : Hi, thanks for writing in. This may be a sign of a failing starter relay. The starter relay is a small unit near the starter that directs power to the starter from the battery. When this fails, it may cause a clicking sound and will not allow the starter to engage the flywheel when you turn the key. I would suggest having a professional from YourMechanic come to your home to diagnose your starting issue to determine the solution to get you back on the road.
is the ecm the problem if battery light is on and the alternator isn’t bad
ANSWER : This is likely a sign of a failing voltage regulator. This is a unit that regulates the charging of the battery by the alternator. In your case, it sounds like the voltage output from the alternator may be much too high resulting in overcharging the battery and burning up wires in the process. I would recommend having an expert from YourMechanic come to your location to diagnose and properly test your vehicle’s charging system.
in my car battery warning light appearing while driving.so I have replaced both battery and alternater still light is on
ANSWER : As you may yourself have seen, there are many reports of this fault with the Civic, that is a battery or alternator is replaced only to have the warning light fail to extinguish despite checking every conceivable electrical possibility. Your only recourse is to have a certified mechanic go through that exercise with your car and that involves first attempting to "re-set" the light. If the warning light returns, the alternator output has to be carefully measured both loaded and unloaded. All terminal connections have to be verified including all grounds. Fuses have to be checked for integrity (continuity) and the possibility of shorts, in for example dash wiring, has to be checked. To request this repair, simply request an electrical components diagnostic and the responding certified mechanic will seek a resolution to this.
Check Engine Light comes on after starting pickup
ANSWER : Hello there, thank you for asking about your 1992 Isuzu Pickup. A professional will have the correct equipment to read OBD1 codes. Retrieving the diagnostic trouble code(s) is the first place to start when diagnosing your vehicle. Increasing RPMs changes engine load, which can in turn affect many different sensors and components, causing the Check Engine Light to illuminate. The only way to narrow down the options and find the culprit is through in person diagnosis with an OEM compatible scan tool. A certified technician from YourMechanic can retrieve the OBD codes at your home or office.
Traction light/reduced engine power and check engine light coming on
ANSWER : Hello. From what you describe, it would appear that your vehicle may be experiencing some sort of intermittent wiring or sensor issue. If the problem occurred again after driving over a bump, then it may be possible that a damaged or loose wire is shorting or having contact issues. A common issue that can cause stalling is a faulty crank position sensor or wiring. I would carefully examine the engine for any loose or damaged wires. If the Check Engine Light comes back on, I would recommend having the trouble codes scanned before resetting the computer.
2007 Honda Accord VSA light and engine light coming on, will not downshift, must come to stop , shut off and start again. 2007 Honda Accord
ANSWER : Hi there – you likely have more than one problem at work here. First task is to extract the problem codes which are causing the Check Engine light to come, and the codes (Honda specific) causing the Vehicle Stability Assist warning to come on. These will help guide diagnosis most effectively. The lack of down shifting is often caused by a transmission solenoid sticking – blocking flow of transmission fluid to some portions of the transmissions valve body. Shutting the vehicle off, then back on, resets the solenoid. The VSA issue may be as simple as a wheel speed sensor, but you will need the Honda-specific codes for the VSA system to determine that. I recommend a transmission inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs. A further VSA problem code scan is also needed to diagnose that issue.
