Your alternator is not functioning properly if your Toyota Corolla flashes the unpleasant battery warning light on the dashboard, which prevents the battery from charging.
The simplest fix is to take the car to a dealership where the issue can be resolved quickly and painlessly. However, if you prefer to enjoy life to the fullest, you can do so in your own garage. Not a rocket, just some bolts that need to be unscrewed and a large circular metal item that needs to be replaced.
So get your tools, preferably a new OEM alternator, and go to work. We’ll start with the serpentine belt removal because the alternator is the large, rounded, vented component to the left of the engine.
- First, disconnect the battery.
- As shown in the video below, find and remove the bolt holding the tensioner. Since the area is quite small and you can’t stick your hand there, you might want to use a ratchet and an extension to generate greater leverage.
- The next step is to wrap the second bolt next to the one you just loosened with a 19mm wrench. In order to remove the belt from the alternator pulley, you can loosen it by pulling towards the front of the vehicle in order to do so.
- Perform the belt disassembly
- By squeezing the clips on the socket and pulling up, you can unplug the wires that are attached to the alternator. Remove the other cable that is attached with a nut as well.
- The two bolts holding the alternator to the engine block must be removed.
- Take a moment to admire the rust-free Toyota-quality bolts.
- Take the alternator out.
- Place the replacement alternator in place, then rewire everything in the opposite direction.
In This Article...
How much does a 2010 Toyota Corolla alternator replacement cost?
Alternator replacement for a Toyota Corolla typically costs between $390 and $477. Between $68 and $86 is the expected range for labor costs, while $322 to $391 is the range for part costs.
Has an alternator been installed in a 2010 Toyota Corolla?
When your automobile is running, your alternator recharges your battery. Your 2010 Toyota Corolla’s alternator could need to be serviced or replaced if you have a battery warning light, a low charge indicator, or if your recently replaced battery already requires a jump. between 200811 and 201012.
On a Toyota Corolla, how long does it take to replace the alternator?
A skilled professional technician should be able to replace your alternator in around 2 hours, depending on the make and model of your car. However, the majority of businesses in the USA will bill you for a full day’s worth of work.
Depending on the brand and model of your car, changing it yourself at home without much experience should take you about 3 to 4 hours. Please do not attempt to change your alternator yourself if you have no mechanical experience; dealing with electricity puts you and your automobile at risk of injury.
Dim or Overly Bright Lights
Your electronic gadgets receive erratic voltage when an alternator starts to fail. This typically manifests as under- or over-performing equipment, such as headlights that are either too dim or excessively bright. Additionally, you can see lights that erratically switch from bright to low and vice versa.
Dead Battery
A dead battery may occasionally just be a dead battery. After a few years of use, it has either reached the end of its lifespan or you may have unintentionally kept the headlights on all night. A dead battery may occasionally indicate a problem with your alternator, though.
When the engine is operating, a defective alternator won’t adequately charge the battery, resulting in a quicker than usual discharge of the charge. Jumpstarting the vehicle is one approach to determine if the problem is with the battery or alternator. If your car runs after being jumpstarted, your battery may need to be replaced shortly. If the car dies again soon after being jumpstarted, it may indicate that your alternator isn’t providing enough power to the battery.
Slow or Malfunctioning Accessories
Accessories that operate slowly or not at all are frequently a sign that your alternator isn’t providing enough power to your car’s electronics. You might have an alternator issue if you notice that your windows roll up or down more slowly than usual, if your seat warmers seem “off,” or even if your speedometer and other instruments start acting strangely.
If the alternator isn’t producing enough electricity, many modern cars feature a priority list of equipment that informs the onboard computer where to cut power first. In this manner, if your alternator fails while you’re on the road, your radio or other unnecessary equipment will continue to function before your headlights.
Trouble Starting or Frequent Stalling
As was already noted, if your engine is difficult to start, your alternator may not be charging the battery. As a result, when you turn the key in the ignition, all you’ll hear is a clicking noise rather than your engine’s purring sound.
On the other hand, if your car repeatedly stalls out while you’re driving, it can mean that the alternator isn’t supplying the spark plugs with enough power to keep the engine running.
Growling or Whining Noises
There are many strange noises that cars make; some are harmless, while others may be signs of major technical issues. You should have your alternator checked properly by a professional right away if you ever hear growling or whining sounds coming from underneath the hood.
When the belt that rotates the alternator pulley falls out of alignment or rubs against the pulley’s side, a growling or whining sound is produced. If the bearings that spin the rotor shaft are failing, you can also hear this noise.
Smell of Burning Rubber or Wires
A burning rubber or wire stench could be a sign that your alternator’s components are beginning to wear out. The drive belt for the alternator may eventually wear down and give off a terrible burning rubber odor due to the constant tension and friction it experiences as well as its proximity to the hot engine.
Similar to an electrical fire, your alternator may smell burning if it is overworked or if it has frayed or damaged wiring. Wires in an overworked alternator heat up dangerously as a result of trying to force too much energy through them. In addition to creating resistance to the passage of power, damaged wires often heat up and smell bad.
Battery Warning Light on Dash
When the battery warning light appears on the dashboard, it’s frequently believed to indicate a problem with the battery. The battery warning light, however, suggests that there might be an issue with your car’s larger electrical system, which includes the alternator.
The normal operating voltage for alternators is between 13 and 14.5 volts. The battery warning light on your dash may come on if your alternator is malfunctioning because its voltage may fall below its maximum level. Similarly, depending on how much strain the alternator is under, the battery light may also come on if the alternator is operating above its voltage limit.
The alternator may fluctuate in and out of its intended voltage capacity depending on the electrical demand from your car’s accessories (headlights, wipers, radio, etc.), which might cause the battery warning light to flash on and off. Although it can seem like a minor inconvenience, it’s preferable to have your car inspected for alternators than to become stranded on the side of the road.
What equipment will I need to replace an alternator?
You’ll require the following equipment in addition to a replacement alternator:
- Ratchets, sockets, and wrenches are examples of hand tools.
- belt tensioning device
- safety equipment and gloves.
- If necessary, a memory protector or battery tender.
- If necessary, use a jack, jack stands, and wheel chocks.
How much does Toyota charge to replace an alternator?
Best in Automotive Repair Alternator replacement for a Toyota Pickup typically costs between $287 and $498. While materials are priced between $199 and $387, labor is predicted to cost between $88 and $111. Taxes and other fees are not included in this range, nor are your particular model year or geographic area taken into account.
How long can a vehicle operate without an alternator?
Simple mechanics apply. Your car’s battery cranks it into motion. The alternator, though, is what keeps it going. How long will a car operate without an alternator, and what can you do to extend the vehicle’s ability to work, for the unfortunate folks who discover that this crucial component of the vehicle is failing?
Your automobile will only run for up to two hours and as little as five minutes without this crucial component. The most run time will be experienced by those driving an older model car or a diesel vehicle. Additionally, you can extend the life of your battery if you keep the engine running until you reach your destination and make sure to turn off as many superfluous electronics as you can.
Does replacing an alternator require replacing the battery as well?
After installing a new car alternator, one of the first items you should check is your battery. You must disconnect the battery before installing the new alternator, according to any installation manual. Therefore, you must at the very least ensure that you reconnect it.
How long does the alternator on a Toyota Corolla last?
It is crucial to go over the fundamentals of an alternator operation first. The alternator, which is attached to the engine, is responsible for giving the battery power. It maintains the car’s electrical and electronic systems operational and charges the battery continuously.
The alternator exerts the most effort of any component in your car, therefore ultimately it will burn out. An alternator lasts seven years or roughly 150,000 miles on average. The quality of the component, the state of the car as a whole, and the number of electronics in operation are some of the variables that might affect the alternator’s lifespan.
How challenging is replacing an alternator?
Lacking funds this holiday season? One of the cheapest repairs you can make at home is replacing an alternator, which can cost several hundred dollars to accomplish at your neighborhood repair shop. You can change it yourself with a few simple tools and an hour or so, allowing you to keep your money where it belongsin your pocket.
You’ll see several Craftsman tools in the photographs, including Cross Force Wrenches, as this project is sponsored by Craftsman. The truth is that we already owned them all. The tools we used before they became sponsors are the same ones we utilized now. Really!
Can a car with a damaged alternator be jumped?
It goes without saying that a broken alternator should be replaced as soon as possible, but what if you can’t, or at least not immediately away, and the damage has left your battery so low that a jump start is required? Is this safe? or can a battery with a malfunctioning alternator even be jumpstarted?
Regardless of how terrible the alternator is, you may jumpstart a car and it will continue to operate for a while if the battery is in decent condition. This is so that the automobile won’t operate only on the battery if the alternator is faulty and not delivering the necessary voltage.
By no means is this advised, but it might be required if you only need to drive a short distance. Jumpstarting is intended to get a flat battery operating, so if you’re doing it, your battery probably has gone fairly low.
A jump-started battery will lose charge much more quickly than one that has been fully charged because the alternator won’t be helping it. Of course, if you are using a lot of electricity for things like heating, phone charging, etc., this could happen faster.
Contrary to popular opinion, the engine will continue to run after the jumper wires are removed until the battery voltage is so low that any electrical systems that are necessary for operation are no longer functional.