2013+ Ford Escape Forum banner

Battery replacement and upgrade to larger battery (2013 Escape 2.5L)

158K views 162 replies 60 participants last post by  Scooter MGee  
#1 ·
Tools/parts needed: 10 mm crescent wrench, 10 mm & 13 mm sockets/wrench, replacement battery (see discussion for size) and a cold beer

Approximate time required: 30 min

Quick discussion about batteries: All of the 2013 Escapes come standard with a size 96R battery. It's one of the smallest batteries (in terms of cranking amps, reserve capacity, & weight) that you can get [I'm referencing the Duracell Automotive Battery spec sheet - these are the batteries sold at Sam's club].



In other words, the stock battery sucks. I assume Ford was saving some money with the 96R battery, but the good news is that the battery tray can accept a larger battery without any cutting, drilling, or any other permanent modifications. And who doesn't want more cranking amps and reserve capacity? Especially if you run a lot of accessories (remote start, tow, lights etc.)

So how big can I go?? The simple answer is that a size 94R (H7) fits without any trouble. See the pictures below for the relative size comparison. I'm using an AGM battery, but a normal flooded battery should fit just the same.




Battery removal/replacement:

1. Turn off the car and and prop the hood open. Locate the battery cover and air intake which houses the air filter. Remove the battery cover and disconnect the positive wire using a 10 mm wrench. Pop open the air intake as if you were replacing the air filter, but don't remove the air filter. Just disconnect the wire plugged in at the top and move the cover to the left so it's out of the way. (The plug is easily removed by pushing the red plastic piece back with your finger nail about a quarter inch, then pull the entire plug backwards.)



With the air intake out of the way, you should be able to access the 4 black plastic plugs (green arrows in the picture). Pull all four of these plugs out. Now you should be able to lift the front cover of the battery tray about 1 inch so that it has some free movement. With the cover lifted up about 1 inch, you should be able to access the two wires that are attached on the bottom left of the cover (red arrows in the picture). Use a 10 mm socket and a 13 mm socket to remove the nuts and then slide the wires off. I've already removed the 10 mm nut in the picture below. Don't drop the 13 mm nut; it's not attached to the wire like the 10 mm one!



Now you should be able to move the battery tray front cover out the way to the right like this:



Before we can move the battery, we need to loosen the clamp holding it down. Remove the two nuts that are holding the metal clamp (green arrows in pciture). The bar can then be lifted off the bolts.



Pull the battery forward and lift it over the edge of the tray. Don't worry, the negative wire should be long enough, but keep an eye on the small wire plugged into the negative terminal (green arrow in picture). Don't put excessive tension on this small wire. Now you should have enough room to use your hand to unplug the small wire from the side of the negative terminal. With the small wire out of the way, the battery should come forward all the way, and you can use a 10 mm wrench to remove the negative terminal.





Remove the old battery from the vehicle.

The empty battery tray should look like this. Note the two plastic adapters that Ford added to accommodate the smaller battery (green arrows). Remove both of these plastic pieces. The rear piece easily pops out by hand. The piece in the front needs to be gently pried upwards.




Congratulations! Now your Ford Escape can accept a "real" battery.



Now get your replacement battery and essentially reverse the process. If you are using the larger 94R (H7) size battery, you may need to remove the handles if it has any so that the metal battery clamp can fit nicely in the center groove. I've included more pictures below of the new battery being installed.







Now that you're finished, you can relax and enjoy the cold beer.
 
#2 ·
#4 ·
I just checked the system voltage during start-up with my scan gauge and it looks like the battery is charging like normal. The voltage was around 14.3 for about 1 minute after starting, then dropped to 12.5. If you watch the video that was linked, the guys battery/alternator does the exact same thing (and he already reset the battery age to zero). I will point out; however, that my old battery and the new battery were both fully charged.

Thanks for the info. I will continue keep an eye on the battery charge and report back if I get any problems.
 
#5 ·
Alphapart, welcome to the forum and thanks for detailed write up. When the time comes, I'll go for the larger battery for sure. Here's what I found in the shop manual about battery installation.

Installation

1. To install, reverse the removal procedure.
2. If installing a new battery, use the scan tool to carry out the Battery Monitoring System (BMS) reset after the battery is connected.

So, unfortunately, BMS reset is required.
 
#6 ·
Reading the workshop manual some more. Learn something new everyday.
Section 414-00
Charging System - System Operation and Component Description
Component Description

Battery Monitoring Sensor

NOTICE: Unless the battery is being replaced, DO NOT reset the battery monitoring system using the diagnostic scan tool. This reset is reserved for new battery installation only. This reset will clear the learned battery data, the battery time in service, and will affect the aging algorithm parameters, which have been learned since the installation of the battery.

The battery monitoring sensor is integrated with the negative battery terminal clamp and cable assembly, which provides a ground to the sensor. The battery monitoring sensor measures voltage, current, and temperature of the battery and uses these inputs to calculate the battery condition. The sensor transmits this information through the LIN circuit to the BCM . The battery monitoring sensor has a 2-pin connector providing battery voltage and LIN connections.

The battery monitoring sensor is an input to the Electrical Energy Management software. If the sensor malfunctions due to wiring issues or failure, a DTC sets. In most cases the Electrical Energy Management functions are turned off until the sensor operation is restored.
Shop manual also talks about charging and jump starting the vehicle. Basically, it tells you to connect the negatives to the car, not the battery pole because BMS needs to know everything regarding charging and discharging state of the battery.
 
#16 ·
Reading the workshop manual some more. Learn something new everyday.
Shop manual also talks about charging and jump starting the vehicle. Basically, it tells you to connect the negatives to the car, not the battery pole because BMS needs to know everything regarding charging and discharging state of the battery.
Thanks for the shop manual info. I will ask my dealer to reset the battery information next time I'm over there. So far, I'm not having any issues.
 
#9 ·
Great write up.

I am a bit annoyed at how complicated these cars have become to do basic maintenance. It does seem unbelievable that changing a battery requires a dealer service call. I can understand that the computer might need to know that a battery has been replaced, but really, a service call? There should be a way for the owner to do this.
 
#13 ·
I wonder if all Escapes come with the smaller battery? The OP has a 2.5L so if you ordered a Titanium with a 2.0L ecoboost maybe it already has the larger battery for the larger demand.
Mark
 
#17 ·
Needing to perform a reset with a Ford specific scanner, just to change a battery?
Another way for dealers to make money.
Seems as if the car makers despise DIY'er like me - disgusting!!

For God's sake, it is a simple battery change, something anyone can do in their driveway in a few minutes - now you need a dealer for that too!!!
 
#25 ·
I've been designing and building machinery for over 35 years, trust me when I say - to the "guys with the ties" cost is the only factor.

As far as battery ratings go, Reserve capacity is definitely more important than CCA these days.
From what I have observed, the computer controlled startup routine manages to get the engine running within one revolution of the crankshaft even on very cold days.
 
#28 ·
I asked a Ford mechanic today about the battery circuit. He said that the system needs to know where the "health" of a battery is when it's first connected. There is no special programming or fancy reset tool needed although they can do it at the shop if one is triggered after a drained battery or replaced battery event occurs. Works like Check Engine light errors on cars that need to be driven for awhile after resetting or else won't pass emissions immediately. Apparently newer Fords will read and adapt to the new battery if there are no issues with any of the battery cells or unexpected battery drain while engine is off.
 
#30 ·
From what I have been reading, the Battery Monitoring System will self reset if it is allowed to learn the battery State of Charge. Here is one line I found in multiple references to the new BMS in these cars:

If the vehicle battery has been charged or battery replaced, it takes approximately 8 hours for the BCM to learn the new battery state of charge. During this 8 hour period, the vehicle must be undisturbed, with no doors opened or keyless entry buttons pressed. If the vehicle is used before the BCM is allowed to learn the new battery state of charge, engine off load shedding may occur earlier than normal and a message may be displayed.
If the vehicle has been jump started, engine off load shedding can still occur and a message may be displayed until the BCM determines the battery state
of charge is above 40%.
One such thread discussing battery replacement can be found here.
 
#31 ·
After reading the above referenced F150 forum, it seems tat the only way to get a sure-fire reset of the BLM system is for the dealer tech to plug in a Ford scanner and perform the reset.

What's next - going to a dealer to have genuine Motorcraft air put in your tires, because regular air won't work with the TPMS.
Yep - they really have us over a barrel!!
 
#35 ·
After reading the above referenced F150 forum, it seems tat the only way to get a sure-fire reset of the BLM system is for the dealer tech to plug in a Ford scanner and perform the reset.

What's next - going to a dealer to have genuine Motorcraft air put in your tires, because regular air won't work with the TPMS.
Yep - they really have us over a barrel!!
It boils down to a dealer will be needed to do a proper battery replacement and system reset.
Since most batteries will outlast their warranties, when the time for replacement comes, dealers are going to SLAM us to do what used to be a simple DIY task. What a rip-off!!
A bit over-exaggerated but I understand your point. If the batteries were micro chipped or RFID'd to accept only Motorcraft batteries then your point would be valid. As it stands, were not quite locked into only Ford batteries and maintenance visits with them.
 
#32 ·
There are two separate things (to reset) mentioned in this thread.

The first one is "Battery State of Charge". This is where BCM (Body Control Module) is keeping track of the current state of charge of the battery. The state of charge is reset when the car is sitting without load (<300mA) for 4-6 hours. During this time BCM will sample battery voltage and calibrate state of charge. Consider this scenario. You left something plugged in the 12 volt outlet and it ran down the battery and the car wouldn't start. So, you removed the battery from the car and charged it up. You reinstalled the battery and the car can be started. However, because the battery was charged outside the car, BCM, had no knowledge of that and the car now showed low battery warning message. The car can be driven but BCM had turned off non-critical systems such as A/C, radio and navigation. You went home, parked the car overnight and next morning, all is well again.

In this first scenario, if the battery was charged while it was still in the car and negative cable (from charger) was connected to vehicle body ground (not battery negative terminal), BMS (Battery Monitoring Sensor) then knew about the charging and BCM knew the correct charging level of battery. You won't get low battery warning.

The second one is "Battery age" if you will. This is where BCM is keeping track of how old the battery is (time in service) and other parameters. The workshop manual didn't say much about what it keeps, however. If a new battery is installed, then, BMS (Battery Monitoring Sensor) needs to be reset so that BCM knows the battery is new. This can only be done using Ford IDS (Integrated Diagnostic System) software.
 
  • Like
Reactions: murcod
#33 ·
It boils down to a dealer will be needed to do a proper battery replacement and system reset.
Since most batteries will outlast their warranties, when the time for replacement comes, dealers are going to SLAM us to do what used to be a simple DIY task. What a rip-off!!

( wish I still had my '79 Bronco!)
 
#37 ·
I have a couple of external battery tender/conditioners that de-sulfate the plates inside inoperative Pb-acid batteries. These chargers have actually brought several batteries back to life which means they paid for themselves. Would be nice to see a smart alternator system that worked identically.

As a side note here, the mechanic also told me about the conditions and precautions of charging or jump-starting dead batteries in the newer Fords with reference to the grounding locations.
 
#38 ·
This is insane. Ford is trying to get cute with technology to "improve" battery life and usage. The problem is, batteries are the least of my worries. Batteries wear down over time and you replace them -- cheap and easy in most cars. Even if this system gets me an extra year of life out of my battery (which I doubt it will) and/or fewer drains, I'd rather not have to deal with this when I need a new battery.
I'm also not all that pleased with the effort needed to physically replace the battery. As some have said, between these two hassles, I'll probably just buy the new battery from Ford and have them install it when the time comes.
 
#40 ·
Did some more reading.
The battery's present state of charge determines what the optimal charging voltage should be. This is why it is important for the "smart alternator" to know the state of charge in order to adjust its output voltage for optimum charging. As it turns out the applied voltage during any given portion of the charging cycle has a great effect on plate sulfation.
Wrong voltage = lots of sulfation
Right voltage = little sulfation and even removal of previously formed lead sulfate deposits.
Also the "age" of the battery affects the required charging voltage during any given part of the charging cycle.

Seem like the old 13.8 volt charging system is dead. Just like everything else, today's charging systems are adaptive to give optimum performance.

We ain't drivin' Henry's model T no more.
 
#43 ·
Seem like the old 13.8 volt charging system is dead. Just like everything else, today's charging systems are adaptive to give optimum performance.
12V batteries aren't 12V and because the laws of physics apply here the "13.8V" charging system isn't going anywhere. Lead oxide and sulfuric is a losing battle that will continue to eat batteries long after we are gone no matter what kind of fancy charging cycles we implement.
 
#42 ·
I wouldn't be too surprised that, with the increasing use of "smart" charging systems in today's cars/trucks, someone - somewhere - will soon come out with a BMS "reset tool" for the DIYer to use when replacing his own auto battery (just like the many "scan tools" we now see in the aftermarket)....
 
#49 ·
  • Like
Reactions: seismic
#44 ·
Yes they are actually 12.6 V when fully charged. 13.8 VDC is a nominal alternator/rectifier output voltage.
According to "Battery Tender" website, graphs show that different voltages are required for optimum charging depending on the battery's state of charge. The required range is not that wide, but nonetheless is there.
Hence the need for the battery sensor and "smart alternator".
I've been an electrical engineer for over 35 years, and have never delved into car batteries this deeply - this thread has opened up whole new learning experience for me.
 
#45 ·
Yup, same here. I am a EE who writes firmware for battery powered devices (not quite as many years!). Until the past year I only had to worry about discharging the batteries (primary cells). I have now written the code to manage a rechargeable battery, but it is a LiIon pack. Getting the most service life out of a rechargeable battery is not so simple sometimes. I am sure the tech that these cars use is much more advanced that cars even 10 years ago!