Why does the battery light come on on my Jeep Cherokee?
If your Jeep Cherokee’s battery light is on, it means a few things. It is trying to warn you that there is an issue with the charging system. The charging system itself is relatively simple. It’s almost always going to be caused by a bad battery or alternator. The battery light comes on when it detects that the voltage in the battery is too low.
Why is the alternator on my Jeep not charging?
Looks like the field coil of the alternator isn’t getting power. There are 3 wires attached to the alternator. One is a big fat wire that goes to the battery, this is the alternator output. The other two wires feed power to the field coil.
What should battery voltage be in Jeep Cherokee?
Touch the positive side of the voltmeter to the positive battery wire. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts. Now that you have a baseline, it’s time to turn the engine on. Leave the air conditioner off, as well as the headlights and any other accessories.
Where is the battery located in a jeep?
The battery is located under the passenger seat, not the engine compartment. Sounds like coolant. The battery is located under the passenger seat, . Click to expand…
If your Jeep Cherokee’s battery light is on, it means a few things. It is trying to warn you that there is an issue with the charging system. The charging system itself is relatively simple. It’s almost always going to be caused by a bad battery or alternator. The battery light comes on when it detects that the voltage in the battery is too low.
Looks like the field coil of the alternator isn’t getting power. There are 3 wires attached to the alternator. One is a big fat wire that goes to the battery, this is the alternator output. The other two wires feed power to the field coil.
Touch the positive side of the voltmeter to the positive battery wire. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts. Now that you have a baseline, it’s time to turn the engine on. Leave the air conditioner off, as well as the headlights and any other accessories.
What causes a car battery light to illuminate while driving?
As you know, the alternator is responsible for keeping the battery fully charged as you are driving the vehicle. But if you have a bad alternator, then it won’t be able to keep the battery charged. This will cause the car battery light to illuminate once there is an inconsistency in the charge.
Why does the battery light come on while driving?
I have a 2008 Patriot 2.0 CRD and the battery light came on and stayed on whilst driving the other day. After checking all connections to alternator and battery and found them to be fine I concluded it must be a faulty alternator. I have now changed the alternator to a brand new one but the problem remains.
Why does the battery light come on when I start the car?
It’s almost always going to be caused by a bad battery or alternator. The battery light comes on when it detects that the voltage in the battery is too low. Most battery lights will come on when the vehicle starts if the computer has detected that the voltage was too low for a quality start.
How to clear check engine light on Jeep Wrangler?
How to Clear Codes on Jeep Wrangler 1 Make sure the engine is not running and key is out of the ignition 2 Disconnect the battery terminals 3 Reconnect battery terminals 4 Insert and turn the ignition key to the run position without starting. 5 All error codes are cleared and CHECK ENGINE icon disappeared. …
Why does my car have a check engine light?
Anything below 14 volts is a suspected faulty alternator. If the alternator is not charging the battery properly, this would explain the battery light and check engine light as many vehicles will set a check engine light in the event of a charging system failure.
How do you reset check engine light on Jeep Wrangler?
Reset service light indicator, engine oil life Jeep Wrangler, oil reset instructions: Turn the ignition to run (one position before starting engine). Fully depress the accelerator pedal slowly three times within 10 seconds. Turn the ignition off and then start the engine to verify the indicator has been reset.
What does check engine light mean on Jeep Compass?
A flashing check engine light is your Jeep Compass’s way of saying “I have a serious problem, don’t ignore me”. Most of the time, that serious problem is a misfire. This flashing light should not be ignored. When your engine is misfiring, it is dumping raw fuel into the exhaust.
How to ckeck engine light codes?
Chevy Check Engine Light Codes Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. Turn the ignition on. Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).
What should I do if my Jeep Cherokee battery is draining?
You’ll want to take a look at your Cherokee’s battery posts where they bolt to the battery. If there is a lot of corrosion here, you’re going to want to clean that off with a wire brush. There are also specific battery post cleaners that you can buy. They are usually less than 10 bucks at the local parts store or Wal-Mart.
Why is my Check Engine light not working?
Reduced gas mileage and stalling can also indicate a MAF problem. A MAF for a late-model car typically costs between $120 and $150. An aftermarket alarm can wreak havoc on your car if it’s not installed properly. It can drain the battery, trigger the check engine light, or even prevent the vehicle from starting.
How to check engine light codes on Jeep Cherokee?
Jeep Check Engine Light Codes 1 Connect scan tool to the 16-pin data link connector (DLC) located near the steering column. The connector may have a removable cover. 2 Turn the ignition on. 3 Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).
Why does my check engine light keep coming on?
A failing oxygen sensor, also known as an O2 sensor, is one of the most common reasons for that Jeep check engine light to come on. And the tricky thing with the O2 sensor is that the car will continue to drive well so you might want to dismiss the light. But an O2 sensor code will surely show up in a diagnostic test.
What are the Check Engine light codes for Chrysler?
P1295Loss Of 5 Volts To TP Sensor P1296Loss Of 5 Volts To MAP Sensor P1297No Change In MAP From Start To Run P1298Lean Operation At Wide Open Throttle P1299Vacuum Leak Found (IAC Fully Seated)
How long does it take for the Check Engine light to reset?
How long does it take for the check engine light to reset? If you are sure you have fixed the problem, it takes around 10-30 successful cycles before the check engine light disappears. One process is one cold-start until the engine is warm.
What does it mean when your battery light comes on?
My car has an automatic transmission. Typically the battery light comes on when the alternator is not providing electrical power to meet demands of the vehicle. That you lost power steering assist along with the battery light coming on, leads me to think the one common thing between them – the serpentine belt drive system – is at fault.
Why does my Jeep not start when I Turn on the ignition?
If your vehicle does not have a check engine light this may not be a problem. It is possible that this is just the sound that the vehicle makes normally. If you’ve owns the vehicle for quite some time and… Engine heat can degrade components such as ignition coils and the crankshaft position sensor. The components will then fail once they are hot.
What causes a Jeep Grand Cherokee to not start?
Jeep Grand Cherokee Won’t Start Diagnosis. 1 1. Battery Cables. While the battery cables are not necessarily the most likely issue to cause your Grand Cherokee to not start, they are some of the 2 2. Battery Charge. 3 3. Starter. 4 2. Ignition Issues. 5 3. Engine Timing.
When does the ignition warning light not come on?
If your car is fitted with an alternator the warning light should not come on when the engine is idling, provided the idle setting is correct, because an alternator produces current even at low speeds.
It’s almost always going to be caused by a bad battery or alternator. The battery light comes on when it detects that the voltage in the battery is too low. Most battery lights will come on when the vehicle starts if the computer has detected that the voltage was too low for a quality start.
How does the battery charge in a Jeep Cherokee?
The charging system in vehicles hasn’t changed that much in the last 50 years. The engine turns the alternator, which charges the battery. There isn’t a lot to it, which makes diagnosing it relatively simple. 1. Battery The battery is primarily there to start your Cherokee. It can run off the alternator just fine once it’s started.
What should the volts be on a Jeep Cherokee?
With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts. Now that you have a baseline, it’s time to turn the engine on. Leave the air conditioner off, as well as the headlights and any other accessories. After firing the engine up, you should get over 14.2 volts.
Why does the battery light come on after a jump?
It would start after a jump then putter out moments later. They had already tested the battery and said that it was good so they may have gotten a bad reading or something bc when I took it to AutoZone they tested it and said it was completely bad.
How can I tell if my Jeep battery is draining?
Remove the negative cable of your battery, connect the tester to the negative side of the battery and to the negative cable of vehicle. The light will come on if there is a drain somewhere. If there is, remove fuses 1 at a time. Every time you remove a fuse, check the light.
The battery is located under the passenger seat, not the engine compartment. Sounds like coolant. The battery is located under the passenger seat, . Click to expand…
What was the problem with the Jeep immobilizer?
The battery was ran dead with the dome light and then the immobilizer problem began. The vehicle ran great and never stalled out or had a check engine light on prior to this. To our defense, The dash had been pulled out prior to Him buying the Jeep to repair the blend doors in the heater ducting by the dealer he purchased it from.
How do you turn off the alarm on a jeep?
Press the power door-lock switch on the keyless entry fob. Close the driver’s side door. Leave all doors closed for about 16 seconds until the Vehicle Security Light on the instrument cluster stops flashing quickly. When the light flashes at a slower rate, this signifies that the system has been reset and rearmed.
Why does the Jeep Grand Cherokee immobilizer not have voltage?
The Pink wire was not giving voltage to the immobilizer, as suspected. There was a break in that wire causing intermittent loss of voltage. We ran a new wire from fuse 7 in the junction block to the connector on the immobilizer and it now has voltage.
What causes a flashing check engine light on a Jeep Wrangler?
While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your Wrangler’s ignition system or fuel system (as stated above), there are other issues that can cause it. Your timing chain could have jumped. If you have VVT, it may be having issues.
Why is my odometer light flickering in my Jeep?
Checked battery with multimeter and it was good. Started engine and alternator charge function was good. Found one of the bolts on positive battery cable was a little bit loose – just enough to move the cable with pressure. Torqued all battery bolts down snugly. Have now driven for several days and over 100 miles without incident.
Press the power door-lock switch on the keyless entry fob. Close the driver’s side door. Leave all doors closed for about 16 seconds until the Vehicle Security Light on the instrument cluster stops flashing quickly. When the light flashes at a slower rate, this signifies that the system has been reset and rearmed.
Jeep Check Engine Light Codes 1 Connect scan tool to the 16-pin data link connector (DLC) located near the steering column. The connector may have a removable cover. 2 Turn the ignition on. 3 Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).
What kind of battery does a Jeep Cherokee have?
Warranty consists of 2 year … AutoZone carries high-performance Cherokee car batteries with polypropylene construction, higher cold cranking amps, best-in-class vent caps and Robust Separators. Switching to a performance option not only prevents your battery from dying out, but it also makes those cold winter start-ups much smoother.
What are the symptoms of a bad alternator in a Jeep Grand Cherokee?
Here are the most common symptoms of a bad alternator in a Jeep Grand Cherokee: The battery light is designed to tell you that there is not enough voltage to properly charge the battery, or that the battery itself is not holding the proper voltage. In rare occasions the service engine soon light may light up.