What kind of fuses does a Subaru Forester use?

Subaru Forester uses standard automotive blade fuses—primarily ATO/ATC blade fuses—along with Maxi fuses in the engine bay and smaller Mini fuses in the interior. The exact fuse types and amperage ratings vary by model year, so consult the owner's manual or the fuse box diagram for your vehicle.

Fuse types you will encounter

These are the fuse families you’re most likely to see when inspecting a Forester’s electrical system. Understanding them helps with replacement and troubleshooting.

• Blade fuses (ATO/ATC): The common, color-coded automotive fuses used in most circuits across under-hood and interior fuse panels. They cover standard circuits like lights, horn, and smaller accessories. Amperages commonly range from 5A to 30A (and sometimes higher for specific feeds).


• Mini fuses: The smaller blade fuses used primarily in interior fuse boxes for smaller circuits (power windows, radios, interior lighting, etc.). Typical ratings include 5A, 7.5A, 10A, and 15A.


• Maxi fuses: Higher-current fuses used in the engine bay power distribution center to protect high-current circuits (main power feeds, ECU power, etc.). Common ratings include 30A, 40A, and 60A depending on the circuit.


• Fusible links or other high-current arrangements: Some generations may employ fusible links in the engine bay as a protective feature for critical circuits.

Because fuse layouts and amperage values shift with model years and regional markets, always verify with the specific year’s owner's manual or the diagram inside the fuse box cover.

Where to find the fuse boxes

Most Foresters feature two main fuse enclosures: an under-hood fuse box in the engine bay for standard and Maxi fuses, and an interior fuse box located behind the dash or under the glove compartment for cabin circuits. The cover and the owner's manual provide the designation and amperage for each fuse.

Reading and replacing fuses safely

When replacing fuses, use the correct amperage rating. If a fuse keeps blowing, it indicates a potential short or overload that requires diagnosis. Always disconnect the battery before performing electrical work to prevent shocks or short circuits.

Summary

In short, a Subaru Forester uses blade fuses (ATO/ATC) for most circuits, mini fuses for interior components, and Maxi fuses for high-current feeds in the engine bay. The exact layout and ratings vary by model year, so refer to the owner's manual or fuse box diagram for your specific vehicle.

How do I know what type of fuse to use?

To identify the correct fuse, locate your vehicle's fuse box and check the fuse box diagram, which shows the amperage and location for each fuse. You can also inspect the blown fuse itself for an amperage rating or use the color-coding system for replacement. For specific applications, you may need to calculate the required current based on the device's wattage and the system voltage, adding a 25% safety margin to the calculation.
 
This video explains how to choose the correct fuse size for your 12V electrical system: 56s12 Volt Planet TVYouTube · Mar 17, 2025
Steps to identify the correct fuse

• Locate the fuse box: This is typically found under the dashboard on the driver's side, though it could also be in the trunk or under the hood. 
• Consult the fuse diagram: Open the fuse box and find the diagram or label, which is usually on the inside of the cover or on the box itself. This diagram shows which fuse corresponds to which component and its correct amperage rating. 
• Inspect the fuse: If you have the blown fuse, look at the top of the plastic body for the amperage rating (e.g., "10A"). You can also compare its physical characteristics (e.g., size, shape, color) to common fuse types to narrow down the correct one. 
• Use the color-coding system: If the amperage isn't visible, rely on the color of the fuse. Different colors correspond to different amperage ratings, though some colors are reused for different fuse types. For example, a red fuse is typically a 10A fuse, a blue fuse is 15A, and a yellow fuse is 20A. 
• Calculate the fuse size (for new installations): 
  • Use the formula Current=WattageVoltagecap C u r r e n t equals the fraction with numerator cap W a t t a g e and denominator cap V o l t a g e end-fraction𝐶𝑢𝑟𝑟𝑒𝑛𝑡=𝑊𝑎𝑡𝑡𝑎𝑔𝑒𝑉𝑜𝑙𝑡𝑎𝑔𝑒 to find the component's normal operating current. 
  • Multiply the result by 1.251.251.25 to add a 25% safety margin. 
  • Choose the next standard fuse size that is equal to or greater than this value, but always lower than the wiring's capacity. 

Factors to consider for any fuse

• Voltage rating: The fuse's voltage rating must be higher than the circuit's operating voltage to prevent premature failure. 
• Current rating: The amperage rating indicates how much current a fuse can handle before it blows. Choosing a fuse with a higher rating than what is needed can lead to electrical damage or fires. 
• Type and size: Ensure the fuse physically fits in the slot. There are various types of fuses, including blade fuses and others that are less common. 
• Response time: Some applications may require a "fast-acting" fuse, while others need a "time-delay" fuse. 

What is the most common problem with the Subaru Forester?

The most common problem with the Subaru Forester is the continuously variable transmission (CVT), which can suffer from issues like shuddering, delayed acceleration, and whining noises, and may require expensive repairs. Other frequent issues include problems with the engine (especially oil consumption), the electrical system, and, in certain model years, issues with windshields cracking and batteries dying quickly.
 
You can watch this video to learn more about Subaru Forester common problems: 51scar PROblemsYouTube · Feb 19, 2024
Transmission (CVT)

• Shuddering and jerking: This often occurs when accelerating from a stop.
• Delayed acceleration and slipping: The engine revs up but the car doesn't speed up as expected, which can be dangerous when merging.
• High-pitched whining: This can be a sign of worn pulley bearings inside the transmission.
• Repair cost: CVTs are often not rebuildable and require a complete, expensive replacement. 

Engine

• Excessive oil consumption: Many model years, particularly from the 2014-2018 generation, are known for burning through oil rapidly.
• Oil leaks: Leaks, often requiring expensive engine replacements, are another reported problem. 

Electrical and other issues

• Electrical malfunctions: Issues can range from infotainment system glitches and GPS errors to more serious problems like a battery dying prematurely or the EyeSight safety system turning off unexpectedly. 
• Air conditioning (AC): Some models experience AC failure that can be costly to fix. 
• Windshields: In the 2019-2024 generation, windshields can crack from small chips. 
• Airbag malfunctions: Older models, such as the 2009-2011, have been associated with malfunctioning airbags. 

This video explains some of the most common issues with the Subaru Forester, including the transmission and engine: 57sGear GazetteYouTube · Oct 23, 2025

How do I know what type of fuse my car uses?

Your car most likely uses blade-type fuses, with common sizes including Micro2, Mini, Low-profile Mini, and standard ATO/ATC blade fuses. To know for sure, check the fuse diagram or cover of your car's fuse box, consult your owner's manual, or inspect the fuse itself for its amperage rating.
 
How to identify the correct fuse

• Check the fuse box lid or diagram: The most reliable method is to look at the diagram on the inside of the fuse box cover or in your owner's manual. This will show you which fuse type and amperage is needed for each slot. 
• Inspect the fuse itself: If you can access the fuse, the amperage rating is printed on top of it. The color also indicates the amperage, but this can vary by fuse size, so it's best to check the number as well. 
• Identify the fuse type: Fuses are visually different. You can tell if you have a Micro2, Mini, or other type by its physical appearance. 
• Use a fuse puller: Your car's fuse box usually includes a plastic tool for pulling out fuses easily without damaging them. 

Common types of automotive fuses

• Blade fuses: This is the most common type, where a plastic body protects metal prongs that plug into the fuse box. They come in different sizes: 
  • Micro2 and Micro3: Smaller than Mini fuses. 
  • Mini and Low-profile Mini: A very common type. 
  • ATO/ATC: The standard-sized blade fuse. 
  • Maxi: Larger fuses for high-current applications. 
• Glass tube and ceramic fuses: While less common in modern vehicles, some older cars may use these types. 
• Bosch and Lucas: Other historical or brand-specific types that may be found. 

What size fuse is in the 2019 Subaru Forester?

15A
2019 Subaru Forester Fuse Auto. Mini Fuse 15A.