What should parasitic drain be on Jeep Grand Cherokee?

Before we get into this month’s Diagnostic Dilemma, let’s review some points from my March, 2016 column about diagnosing battery drains. As a general rule, a “parasitic drain” of less than 30 milliamps (mA) is normal for most vehicles 15 years old and newer.

Why is the battery draining on my Jeep Grand Cherokee?

My client shop quickly recognized that the high-amp sound system installed in the Jeep was likely causing the high-amperage battery drain and, with the current owner’s permission, removed the system. The shop then determined that a low-amperage battery drain remained, which they couldn’t locate.

How to find the cause of parasitic battery drain?

Luckily, you can usually find the cause of a parasitic draw yourself. Start by connecting a digital multimeter to the negative battery terminal of your vehicle. Then, remove the fuses one at a time while watching for changes in the multimeter’s reading.

How can I tell if my car has a parasitic draw?

The proper way to check for a parasitic draw is with an inductive amp meter. This will tell you if there is a draw from the battery when there shouldn’t be. The draw from a battery at rest should be less than 100mA or so (maybe a bit more for a luxury car).

What are the top problems with the Jeep Patriot?

The 2016 model year got a little bit better than the previous years, with the body and paint still being the top problem category. The next highest problem issues with the Jeep Patriot involve the brakes, the engine, and the electrical system.

How to check for parasitic battery drain in a car?

Attach a multimeter (set the dial on the multimeter to measure Amps as per multimeters instructions) between the negative cable and the negative battery post. Wait a few seconds to several minutes for the car to go into sleep mode — i.e. when you make the contact with the ammeter, the car’s computer systems “wake up.”.

What kind of transmission does a Jeep Patriot have?

The transmission options include the 5-speed Magna manual transmission, the 6-speed Aisin BG6 manual diesel transmission, and the 6-speed Hyundai 6F24 automatic transmission.

When did the Jeep Patriot get a facelift?

The Jeep Patriot underwent a facelift in 2011, with minor interior and exterior upgrades for this model year. The front fog lamps were given a smaller size and placed in a different location, with the “Patriot” lettering on the rear bumper removed and replaced with a traditional look.

How long does it take to drain a Jeep Grand Cherokee battery?

1. “Doing the math” will help define the type of battery drain we’re dealing with. If a fully charged automotive starter battery rated at 60 amp-hours is subjected to a constant drain of about .250 amps or 250 milliamperes (mA), it would take ten days to drain the battery to a threshold value of 10.5 volts.

What kind of battery does a Jeep Grand Cherokee have?

Let’s look at a brief diagnostic history of a module draining the battery on our second case study, which again is a 1998 Jeep Grand Cherokee that happens to be owned by the same person as our first case study.

Why is burned wiring a red flag on a Jeep Grand Cherokee?

Burned wiring is always red flag because the cost of replacing a main wiring harness can be prohibitive on newer vehicles and nearly impossible with older vehicles because a replacement wiring harness is no longer available. Photo 3: Butt connectors and overheated wires indicate that the vehicle might become a total loss.

How can I find out if my car has a parasitic draw?

What are the symptoms of a failing BCM?

5 Common Symptoms of a Failing Body Control Module (BCM) 1 The Intermittent Operation of Electronic Components. 2 Security Function Errors. 3 Check Engine Light (CEL) or Other Instrumentation Cluster Warning Lights. 4 Battery Drain (Parasitic drain). 5 No Start Condition.

Can a BCM have a no start condition?

Because of the BCM’s communications with other modules and components you may experience a no crank or no start condition. In many cases, your BCM will alert you to issues with symptoms, warning lights or both.

When does the Body Control Module ( BCM ) fail?

2. When the BCM is exposed to extreme heat, especially during summertime, the function of this system might be undermined and may not give you accurate results. Excessive heat may come from the car’s engine or the surroundings. 3. The BCM could be in danger of failure when your car suffers shock from a collision and other similar accidents.

Can a 2002 Jeep Grand Cherokee Laredo 2.7 start?

Hi, I have a 2002 Jeep Grand Cherokee Laredo 2.7 and experienced a battery draining problem. 3 days ago tried to start my Jeep, but no go. Battery dead.

Why does my 1998 Jeep Grand Cherokee drain by itself?

A 1998 Jeep Grand Cherokee has gone through 3 batteries in the last 3 months. While they have all been replaced by warranties, it’d be nice to get the problem solved permanently. I’ve tested the alternator, and it’s not defective. I’m suspecting it might be a short somewhere in the system.

How to replace sunroof drain hoses in Jeep Grand Cherokee?

Replacing the hoses pretty much straight forward, you have to gain access to them and then install a new silicon/rubber 12mm hose instead. First thing to do is locate the drain holes in the sunroof rails, there are 2 holes in the front corners, here in the picture you can see the left one:

Why are my Jeep Grand Cherokee sunroof drain hoses breaking?

One of the common problems with the Jeep Grand Cherokee WJ (1999-2004) is the wet floor after heavy rain. If you have a sunroof, the immediate suspect would be the sunroof drain hoses. They are going down from the sunroof to the floor and tend to break after few years.

When did I Buy my Jeep Grand Cherokee Limited?

I have a 2000 Jeep Grand Cherokee Limited with just over 238,000. Bought this car with just over 35,000 in 2003. It’s been a great reliable car and always got me from point a to b without a problem. This is the first problem I have really had with my jeep. The battery would drain if it sat for more than a couple of days.

How often should I replace my catalytic converter in my Jeep Grand Cherokee?

I replaced my catalytic converter and muffler twice, the first time they were old and they both needed replacing.

How to troubleshoot electrical problems on a Jeep Grand Cherokee?

Troubleshooting electrical problems on a Jeep Grand Cherokee requires the use of a voltmeter with an ohm scale. A wiring diagram for the vehicle is a major help for harness problems and for computer related problems.

Why does my Jeep Grand Cherokee draw so much?

th sunroof module was the most common reason for excessive draw (the fix was reflashing the module with new software) but i have seen aftermarket alarms/remote starters/radios fail and wake up the bus causing the draw, as well as the glovebox light to stay on due to a warped glove box door, and cell phone chargers left in the cigarette lighter.

Where does the power come from on a Jeep Grand Cherokee?

The other two terminals are a switched power source of far less amperage and a ground. The switch that operates the relay has power from the fuse block or a buss bar that gives power to multiple circuits.

When does a Jeep Grand Cherokee battery drain?

Jeep Grand Cherokee Questions – Battery drains when jeep is not started for a few days and have to rec… – CarGurus If I do not drive my Jeep every day the battery drains and has to be recharged.

Where is the brush assembly on a Jeep Grand Cherokee?

A wiring schematic indicates that “Gen Source” (PCM pin #25, connector #3) and “GEN Field Driver” (PCM #10 connector #2) lead to the brush assembly at the alternator. Apparent logic leads to a diagnostic scenario in which the alternator field circuit amperage increased to far more than needed for normal electrical loads (shorted rotor?).

What’s the problem with my 2005 Jeep Grand Cherokee?

I have a 2005 Jeep Grand Cherokee. I’m having an IOD battery drain problem. I’ve metered several places in the electrical system and have found the following, but I still cannot determine the source of the draw. Ignition off, 1.74 amp draw.

How to remove an IoD from a Jeep Grand Cherokee?

Disconnect 15amp IOD #1 fuse, cavity 27 of the IPM, draw goes to .02 amps after 30 seconds. Disconnect 40amp PB Power fuse, cavity F13 of the PDC, draw stays at 1.04 amp.

What kind of battery does a Jeep Laredo have?

I have a 1998 Jeep Grand Cherokee Laredo that I bought for my daughter to use. The battery was brand new when I got the Jeep, but soon after purchasing it I would find if it sat a few days without driving it the battery would be completely dead. I searched online, asked my mechanic friends and didn’t hear of anything that made sense to me.

How many batteries in a 1998 Jeep Grand Cherokee?

A 1998 Jeep Grand Cherokee has gone through 3 batteries in the last 3 months. While they have all been replaced by warranties, it’d be nice to get the problem solved permanently.

Is there a problem with a Jeep Grand Cherokee battery?

Our first case study is a 2000 Grand Cherokee (Photo 1), that was draining the battery so quickly that the original do-it yourself owner had installed a master switch to disconnect the battery (Photo 2). The Jeep was then sold to a second party, who didn’t realize the complexities involved with solving this battery drain problem.

Why does my Jeep Grand Cherokee make a clicking sound?

Grand Cherokee/ parasitic drain – Maintenance/Repairs – Car Talk Community Vehicle has been in the shop several times within one month( Battery test, replace accelerate idle switch, rear end replace) latest delema is with a constant clicking sound coming from under/ near dashboard on passenger…

Where is the drain plug on a Jeep Grand Cherokee?

Put on your safety glasses and crawl under the Jeep on a creeper to locate the radiator drain plug. On a 4.0 liter engine, it will be on the right (passenger side) side of the inside of the radiator and on a 4.7 liter engine, it will be on the left (driver’s side) side of the inside of the radiator.

Can you drain the radiator on a Jeep Grand Cherokee?

Draining the radiator on your Jeep Grand Cherokee is not overly difficult and by doing it yourself, you can save money. Draining and filling your radiator is a low-line maintenance procedure with the understanding that you’re not replacing all the coolant in your system.

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