10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
3,630 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2020 Subaru Ascent electrical problems

electrical problem

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2020 Subaru Ascent Owner Comments (Page 1 of 5)

problem #97

Feb 072024

Ascent

  • miles

A D V E R T I S E M E N T S

My car refused to start-pressed the ignition and it sputted, lots of lights went on and off and then the running lights came on and stayed on and ran the rest of the battery out. Had to charge it for hours to get it started again.

- Washington, DC, USA

problem #96

Nov 302023

Ascent

  • miles
We purchased a used 2020 Subaru Accent from a dealership on 11/16/23. Twice since that date the car would not start due to the battery not having enough charge to start it. The dealership that we bought it from stated that prior to the sale date they had a new battery installed.

- Norwalk, IA, USA

problem #95

Oct 162023

Ascent

  • miles
Reporting a serious incident with my 2020 Subaru Ascent at 21k miles. On October 16th, a burning plastic smell and white smoke from the floorboard forced an immediate stop; I had to call the fire department for safety. The vehicle's battery has been replaced thrice, and the radio system frequently resets. Despite a Subaru recall fix in February meant to prevent such issues, the problem persists, raising major safety concerns. With 20+ years in electrical engineering, I've noted consistent electrical issues with this car. I urgently request NHTSA intervention for an immediate and thorough investigation, holding Subaru accountable for ensuring vehicle safety.

- St Clair Shores, MI, USA

problem #94

May 102023

Ascent

  • miles

A D V E R T I S E M E N T S

Car was unresponsive and would not start. It was just purchased certified used on 5/8/2023. On 5/10/2023 AAA replaced the battery and on 5/12/2023 the battery died again as a result the car did not start and was unresponsive. Tailgate was beeping in both situations.

- Rancho Cucamonga, CA, USA

problem #93

Dec 102022

Ascent

  • miles
The contact owns a 2020 Subaru Ascent. The contact received an email regarding NHTSA Campaign Number: 22V907000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

- East Troy, WI, USA

problem #92

Oct 312020

Ascent

  • miles
Battery would drain to the point where it would need to be jumped to start. I carried a jump starter in the car during the cold months. Finally took car to be inspected and they told me that the problem was my battery and that I needed to replace it with a $465 battery. I-€™ve been dealing with this issue for 2 years and now I have found out that the car has a defect that drains the battery.

- Bella Vista, AR, USA

problem #91

Jul 192020

Ascent

  • miles

A D V E R T I S E M E N T S

This car is having constant problems with the battery failing. It especially fails when we are going to any type of trip where packing the car is a process that takes time. The battery dies on us often and is unpredictable, leaving us stuck often. I bought this car because I want a RELIABLE car. At any moment we could be stuck somewhere with my kids. No warning comes on to prevent this from happening.

- Ben Lomond, CA, USA

problem #90

Oct 132022

Ascent

  • miles
My battery electric has been to hay wire from time to time and now my car is flickering all electric and car wont start. Locks wont work.

- Nipomo , CA, USA

problem #89

Oct 092022

Ascent

  • miles
Battery gets drained if the trunk is open longer than an hour. Left the car trunk open during our camping trip while unloading and loading and in both the instance the battery drained and we we had to scramble for help to jump start the car. This happened last time exactly the same way when we were in the campsite as well.

- Brentwood, TN, USA

problem #88

Jul 272022

Ascent

  • miles
The battery in my 2020 Subaru ascent died without any warning. The light would go on, back talegate wouldn-€™t open, nothing would work. I called AAA and they came out to test it. I was told it was completely dead, there were no cells left in it, as if the lights, radio and doors were left open for an extended period of time (I was in the grocery store for 15 minutes, nothing was left in). He was able to jump start it but after some time of charging the battery. The battery is not old. We purchased the car in Dec of 2021 from a dealer.

- Pepperell , MA, USA

problem #87

Aug 052022

Ascent

  • miles

A D V E R T I S E M E N T S

We had two wire harness that was burnt twice in a year apart for our 2020 Subaru Ascent Touring. Here are the two parts # and description: Slow Blow Fuse 170A under part #82211XC00A & Wiring Harness R LH USA under Part #81502XC11B were burn. We use Subaru to tow from time to time for our 2021 Airstream Bambi 16RB (dry weight of 2,900 lbs. and GVWR of 3,500 lbs.). On 06/21/21, we noticed the car has no battery and we called roadside assistance to jump the car, but the car battery died again. On 06/22/21, we called roadside assistance to jump the car, this time, we drove to Subaru directly to have the dealer look at the issue. Dealer inspected and replaced a battery for us under warranty. On 06/26/21, the battery was completely dead again. So we have our car jumped and go to the dealer. We have 9,214 miles at this point. After 2 weeks of diagnose, dealer told us the main left wiring harness was burnt due to excessive power draw from the trailer, possibly by the electric tongue jack on the trailer, we were the 2nd exact case happened in the whole nation by that time, they will fix it as a one time courtesy and recommend us to remove the electric tongue jack. Vehicle picked up on 07/27/21, we switched electric tongue jack to manual jack. On 08/05/22, when we drove less than 5 miles out of our house, we noticed our dashboard started to flash all kind of warning message-Transmission, Tire Pressure, Vehicle Dynamic Control and Airbag system, eyesight was disabled. We decided to exit the freeway. Burning smell noticed and the car can't be started. We towed the vehicle to dealer for inspection. Dealer took a week to discover the problem was caused by the same burnt harness. After back and forth for 3+ weeks, dealer refused to cover under warranty despite we did not use the electric tongue jack(the cause dealer identified last year for the burn) the whole year. We are waiting for Subaru of America for update as of 08/31/22 under case #220824-232370 filed on 08/24/22.

- Monrovia, CA, USA

problem #86

Sep 012021

Ascent

  • miles
Excessive battery drain for no reason. The vehicle has a random battery drain for no apparent reason. This vehicle has less than 26K miles on it and has needed a charge or jump-start more than 10+ times. We have been able to replicate the problem numerous times, once charged, the battery and alternator pass tests.

- Oceanside, CA, USA

problem #85

May 102022

Ascent

  • miles
Battery died while in idle, unable to restart, constant clicking and beeping. Requires roadside assistance. This is the 3rd time the battery has been dead on this car....First time, shortly after purchase, the dealer replaced the battery, saying it was a battery issue. Second time the car had been parked in the garage, a few months ago, no lights left on. Today, it was idling as I was picking up my kids, it just died. Battery is about a year old. Now all dash lights are just flashing. Will see if there is permanent damage.

- Meridian, ID, USA

problem #84

Feb 192022

Ascent

  • miles
Something in car drains battery frequently not while the vehicle is running but after it-€™s been off for a few hours when no lights have been left on, Subaru dealership refuses to admit there-€™s a problem. This leaves me exposed to being stuck in unsafe situations with a dead battery. No warnings ever come on to alert me the battery is draining. Transmission frequently slips and stutters when accelerating to higher speeds like when trying to transition onto the interstate. Subaru also denies this problem. They fixed the transmission clutch but that did not help.

- Nokomis, FL, USA

problem #83

Apr 152022

Ascent

  • miles
Battery goes dead after a series of short trips. Happened once before. Dealer had the car for 3 days and could not reproduce the problem. Intermittent problem, stranding driver in potentially unsafe areas.

- Roseville, CA, USA

problem #82

Apr 062022

Ascent

  • miles
Constant dead battery No start

- Altamahaw, NC, USA

problem #81

Mar 232022

Ascent

  • miles
My Subaru 2020 with 16,000 miles stalled in the middle of driving down the road in Town, I was driving 35 mph when out of nowhere the car stalled. I was able to coast/turn on to a side street. I-€™m lucky the car had enough momentum to keep going or we would have been hit by traffic as the street we were on is a busy road. The car flashed all the lights when it stalled and refused to crank over, it was low on gas so I called AAA and they brought 5 gallons of gasoline and filled it. The technician then tried to get the vehicle to start but it wouldn-€™t. Luckily he offered to tow it to my house for free. I have tried multiple times to get the vehicle to start and it wont. It cranks but doesn-€™t actually move. I don-€™t know what-€™s wrong and now I have to have it towed to the the local dealership. This is the second major issue that has happened. The first one was that the transmission failed and with my car having a branded title for being stolen/recovery. Subaru would not replace the transmission at 7,600 miles and I had to find a used one to replace it with. I now just got the recall letter and have messaged Subaru about it.

- Idaho Falls, ID, USA

problem #80

Feb 102022

Ascent

  • miles
During a camping trip the battery died when the tailgate was left open. Second battery incident: Went to go start my car after not driving for 6 days, battery was dead. No lights, doors, or hatch was on or open. After using a trickle charger I recharged the battery and was able to start the car after 4 hours of charging. After the car sat for one day the engine did turn over, but it sounded like it took a bit of extra effort for the starter to get the engine going. Third battery incident: I went to start my car again after it was parked for 5 days and the battery was dead again. I used the trickle charger again and was able to charge the battery to over 80%. The next day I took the car in for a service to investigate why the battery was draining to dead after not driving for days. The service department was unable to determine a cause of the issue. The battery was in good condition and was in the green on the grading scale.

- Nolensville, TN, USA

problem #79

Feb 282022

Ascent

  • miles
12V Battery for the Car needed to be jump started every morning. Car will not START until we jump start the battery. Security Beeping and all car buttons not working. The problem started since Feb 28, and its been happening almost every morning.

- Palm Desert, CA, USA

problem #78

Jan 252022

Ascent

  • miles
Rear hatch open for more than 10 minutes, the battery is dead. Also, if the radio is left on after the car is turned off the battery is dead.

- Tacoma, WA, USA

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