The contact owns a 2020 Toyota Camry. The contact received notification of NHTSA Campaign Number: 23V865000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the "Failure - Ignition Control" message was displayed. The contact stated that occasionally the seat belt warning chime failed to turn off while the seat belt was secured. In addition, the…
2020 Toyota Camry electrical problems
moderate 57 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
57
Recalls
0
Avg fix
$850
When does it fail?
Of the 57 electrical complaints filed for the 2020 Toyota Camry, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 57 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 19 model years of Toyota Camry in our records for electrical problems, this one ranks #3 by owner-complaint volume.
The failure pattern owners describe
Buyer takeaway: The 2020 Camry has a widespread 12V battery drain problem that leaves owners stranded, even with newer batteries. Expect multiple trips to the dealership for firmware updates, potential battery replacements, and warning lights for safety systems—and no guarantee the issue stays fixed.
The 2020 Camry's electrical system is trouble-prone across a large cluster of complaints. The dominant issue is parasitic battery drain: vehicles parked for just 1–3 days lose complete charge despite no lights left on, doors unlocked, or accessories running. Battery tests good at the dealer, but owners find themselves stranded repeatedly. Some paid for 2–3 replacement batteries in the first year of ownership.
Toyota issued Technical Service Bulletin T-SB-0095-20 in September 2020 for "Depleted 12V Vehicle Battery When in IG-OFF," identifying a software problem in the Data Control Module (DCM). Dealers applied firmware updates and DCM resets as a fix, but the update was not pushed fleet-wide and did not stop recurrence in many cases. Owners report being told to run a trickle charger, drive the car 30 minutes twice weekly, or accept they don't drive enough—deflecting blame rather than addressing a design defect.
Secondary failures cascade: multiple warning lights (pre-collision, brake malfunction, hybrid malfunction, parking brake disabled) erupt after battery events. One vehicle's battery exploded during startup; another had rodent-damaged wiring in the engine harness that required repeated $600 repairs. Door locks fail without pattern, and charging-system codes leave vehicles in reduced-power mode. Hard starts with hesitation occur even after firmware updates. Dealers often cannot reproduce faults in the shop, leaving repair unresolved.
Owners bought brand-new vehicles expecting reliability and are instead managing recurring electrical crises with no recall and dealers citing owner blame. The issue appears deliberate to address only after 2021 model-year implementation, penalizing 2020 owners even post-warranty.
Same Toyota Camry electrical reports on nearby years: 2017 · 2018 · 2019
Failure modes owners describe
12V Battery Drain / Dead Battery
Battery discharges completely while vehicle is parked for 1-3 days with no lights or accessories left on. Owners report the battery tests good at the dealership but drains overnight or after short periods of inactivity. Some vehicles develop the issue within the first year of ownership despite low mileage. The underlying cause is identified in some complaints as parasitic drain or a software issue with the Data Control Module (DCM) causing unexpected power draw.
When: Occurs after 1-3 days of vehicle sitting parked; some failures reported as early as 1,700 miles, with recurring issues at various mileages up to 76,000 miles
Symptoms owners cite: Battery completely dead after short idle periods; Dashboard lights flicker or dim; Vehicle will not turn over or cranks weakly; No response from key fob; Clicking or rattling noise on start attempt; Smart Key Malfunction warning message; Vehicle requires jump start to operate; Issue recurs even after battery replacement
Codes mentioned: Smart Key Malfunction, Key Fob Not Detected, Data Control Module (DCM) firmware issue
Repairs/costs cited: Battery replacement (multiple times in some cases); DCM reset and firmware update (T-SB-0095-20 cited); dealers recommend trickle charger or regular driving (30 minutes twice weekly); some dealers upgraded to higher CCA battery (770 CCA vs. original 560 CCA); one case required DCM disconnection, but disabled audio system
Recalls/TSBs owners mention: Technical Service Bulletin T-SB-0095-20 (dated September 30, 2020) addresses 'Depleted 12V Vehicle Battery When in IG-OFF' for 2020-2021 models. DCM firmware updates applied to some vehicles but not issued as blanket recall. Dealers initially blamed owner driving habits or low-mileage operation.
Multiple Warning Lights and System Malfunctions
Vehicle displays multiple simultaneous warning messages related to safety systems (pre-collision, brake systems, ABS, hybrid malfunction, secondary collision brake malfunction) along with electrical issues. In some cases the vehicle loses motive power while driving or shuts off unexpectedly. Warnings often persist even after battery replacement or jump starts.
When: Occurs during driving or after battery-drain events; some failures noted at 32,000-76,000 miles
Symptoms owners cite: Pre-Collision System Malfunction warning; Secondary Brake Collision Malfunction message; Anti-Lock Brake (ABS) malfunction warning; Brake System warning; Hybrid Malfunction warning; Parking Brake Disabled message; Check Engine light illuminated; Vehicle loss of motive power while driving; Vehicle shuts off in traffic; Steering wheel unresponsive; Unable to shift into Neutral
Codes mentioned: Pre-Collision Warning Malfunction, Failure - Ignition Control, Secondary Brake Collision Malfunction, Hybrid Malfunction, Parking Brake Disabled
Repairs/costs cited: Dealers attempted firmware updates and DCM resets; one battery explosion case required battery replacement and electrical inspection; rodent damage to wiring (fuel injection and other circuits) causing similar symptoms required $600+ repairs; one case with 'green death' corrosion at shift indicator connector cost $4,585.25 to repair
Recalls/TSBs owners mention: Firmware and software updates applied (e.g., Telematics Module I9I-13 DCM update to LG-N010FFB); dealer note that 2021 models had fixes applied and dealer had VIN-specific issue lists. No blanket recall issued for warning light cascade.
Door Lock / Unlock Failure
Doors fail to lock or unlock via key fob or interior door locks. Some owners report only certain doors (rear passenger, driver side) responding, while others lose function on all four doors. Abnormal squeaking sounds accompany the failure. Issue occurs both while parked and occasionally while driving.
When: Reported at mileages ranging from approximately 40,000 miles; one case of automatic locking/unlocking while driving
Symptoms owners cite: Key fob does not unlock doors; Door locks do not respond to interior button; Only one door (driver side) unlocks while others remain locked; Abnormal squeaking sound from door mechanisms; Doors lock or unlock automatically while driving; Inability to enter vehicle (completely locked out); No warning messages or illuminated lights prior to failure
Repairs/costs cited: Dealers notified but vehicle not yet repaired in reported cases; one customer told vehicle was out of warranty and repair cost unknown; fob reprogramming did not resolve issue in at least one case
Battery Explosion
Battery exploded under the hood during vehicle startup, generating loud abnormal sounds and smoke. Post-explosion, acidic residues remained in the engine compartment and caused additional electrical damage to wiring and components.
When: Reported at approximately 74,480 miles
Symptoms owners cite: Abnormal exploding sounds from under hood during start; Smoke coming from under hood; Battery physically exploded; Acidic residue damage to surrounding wiring after explosion; Multiple subsequent warning lights (Pre-collision, Maintenance Required, ABS, Anti-Lock malfunction); Persistent alarm sounding
Codes mentioned: Pre-collision Warning Malfunction, Maintenance Required, ABS malfunction, Anti-Lock malfunction
Repairs/costs cited: Battery replaced after explosion; secondary inspection by independent mechanic found acidic residue damage from battery acid remained after dealer repair; vehicle returned to dealer for further repair but repair was incomplete at time of complaint
Recalls/TSBs owners mention: Manufacturer notified and case opened; no resolution details provided in complaint
Engine Start / Ignition Issues
Vehicle exhibits difficulty starting, hesitation on cold-weather starts, and refusal to start despite battery testing good. Some vehicles crank once or twice and shut off, requiring multiple start attempts. One vehicle exhibited hard-start symptoms accompanied by coolant/antifreeze smell.
When: Reported from early ownership (7,000-25,000 miles); one case at 1,224 miles (leased vehicle)
Symptoms owners cite: Difficulty starting in morning or after cold soak; Slight hesitation on startup for past few weeks; Clicking and rattling noise on start attempt; Vehicle cranks, revs engine, then shuts off; Hard start despite good battery; Coolant/antifreeze smell accompanying start delay; Multiple start attempts required before engine turns over
Codes mentioned: Parasitic Drain in Battery from Computer Demand Overload
Repairs/costs cited: Dealers attributed issue to software update failures and recommended second firmware update; one dealer recommended half-hour driving twice weekly to keep battery charged; one complaint mentioned fuel pump replaced (warranty 1 year) but issue persisted
Recalls/TSBs owners mention: Software/firmware updates recommended as fix; dealerships advised repeated updates or vehicle replacement options (e.g., new lease)
Rodent Damage to Electrical Wiring
Rodents repeatedly damaged critical electrical wiring in the engine compartment, particularly fuel injection system wiring. Damage recurred within days of dealer repair, despite vehicle being parked in a home garage.
When: Multiple instances within days of each other; one vehicle at approximately 74,480 miles when explosion occurred (possibly related to prior rodent damage)
Symptoms owners cite: Wiring damaged in fuel injection system; Multiple electrical malfunctions following rodent damage; Check engine light and warning messages after wire damage; Recurrent damage to same or adjacent wiring
Repairs/costs cited: Two separate $600 repairs for wiring replacement at dealership; damage recurred the next day after first repair; owner reported this issue unique to this vehicle despite other vehicles parked adjacent with no problems
Coolant Bypass Valve / Engine Thermal Issues
Coolant bypass valve malfunctions, with dealers noting this is a frequent issue across multiple Toyota models. Repair costs exceed $700 and is not covered under warranty. One complaint also references potential overheat risk and cracked head gasket.
When: Reported at mileages ranging from early ownership to 21,000+ miles
Symptoms owners cite: Check engine light illuminated; Vehicle can overheat or cause electrical issues; Coolant smell at startup (in one case with hard-start symptom); Misfiring and potential stalling in traffic; Cracked head gasket (one case)
Codes mentioned: Check Engine
Repairs/costs cited: Repair cost exceeds $700; warranty does not cover defect; dealer stated issue is frequent for Toyota models; one case mentioned fuel pump replacement, charcoal canister and vent valve replacement ($1,000) without resolution of underlying charging/electrical issue
Recalls/TSBs owners mention: No recalls issued; warranty does not cover repair
Charging System / Alternator Output Failure
Vehicle displays charging system errors, enters reduced power mode, and leaves owner stranded. Battery tests good but charging system does not maintain charge. One vehicle's battery runs at only 12V when idle and never exceeds that voltage, indicating lack of alternator output.
When: Reported at various mileages; recurring issues across multiple complaints
Symptoms owners cite: Charging system error notification on display; Vehicle enters reduced power mode; Left stranded on roadside multiple times; Battery voltage never exceeds 12V at idle (should charge above 12V); Lights stay on continuously; Inability to maintain battery charge
Codes mentioned: Charging System Error
Repairs/costs cited: One case involved fuel pump replacement, charcoal canister and vent valve replacement ($1,000 total) without resolving charging issue; another case involved DCM disconnection, though this disabled the audio system
Electronic / Shift Indicator Corrosion
Corrosion ('green death') develops at electrical connections to the shift indicator, preventing proper shifting and display functions.
When: Reported at approximately unspecified mileage; issue caused extended downtime
Symptoms owners cite: Check engine light and chip failure light; Shift indicator shows incorrect gear (reverse shows as drive); Transmission shift malfunction
Codes mentioned: Check Engine, Chip Failure Light
Repairs/costs cited: Repair cost $4,585.25 for 'green death' corrosion removal and shift indicator connection repair
Delayed Acceleration / Power Loss
Vehicle hesitates or fails to accelerate when driver attempts to merge or take off, creating safety hazard. Multiple near-miss collisions reported due to delayed acceleration. Also described as vehicle losing motive power while driving.
When: Reported at various mileages; recurring issue requiring computer update
Symptoms owners cite: Major delay in acceleration on takeoff; Near-miss collisions due to inability to accelerate when needed; Vehicle losing motive power while driving at 35 mph; Vehicle pulling unintendedly to center lane; Loss of steering control; Moments of failure then vehicle resumes normal operation
Repairs/costs cited: Dealers advised waiting for computer system update; one case unable to be duplicated by dealer but failure recurred; one case determined faulty battery was cause
Recalls/TSBs owners mention: Pending software/computer system updates; no updates immediately available
Audio / Entertainment System Malfunction
Stereo system randomly shuts off or loses sound. In one case, disconnection of DCM to address battery drain disabled the audio system entirely.
When: Reported at various mileages
Symptoms owners cite: Stereo randomly shuts off; Audio loses sound intermittently; Complete audio system inoperability after DCM disconnection
Repairs/costs cited: Pending software update per dealer; in one case DCM disconnection to fix battery drain resulted in EMTINE 3.0 audio entertainment system not working
Recalls/TSBs owners mention: Update pending
Seat Belt Warning Chime Malfunction
Seat belt warning chime fails to turn off even when seat belt is properly secured, creating persistent annoying noise.
When: Reported at approximately 76,000 miles
Symptoms owners cite: Seat belt warning chime sounds continuously; Chime does not silence when seat belt is buckled
Recalls/TSBs owners mention: Vehicle affected by pending NHTSA Campaign Number 23V865000 (Air Bags); recall parts not yet available
Synthesized from 57 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Dead battery at 21000 miles. Car is less than 2 years old and didn't drive it for 36 hours and the battery completely drained. Even after jump start electronic dash wouldn't function properly.
Battery discharges every 7 to 10 days itself. Dealership checked said everything ok. But can't tell why battery goes dead al the time.
My 2020 Camry has been nothing but a problem and Toyota is noncompliant with helping me. The service recall for the fuel pump was fixed at Vaughn Toyota in Bastrop La .. a week later I still had the same issues. They refused to put another fuel pump on my car even thought the fuel pump had a one year warranty. I then took it to Landers in Little Rock and since I had “codes” I had to pay $180…
Two instances of parking the 2020 Toyota Camry and electrical system going "dead" within 24-36 hours. Battery drained/unable to enter via FOB/unable to start vehicle. Car maintenance and inspection occurred in November 2, 2022. Testing of battery by Toyota Service Center confirmed battery was not issue and worked as normal. Battery less than two years old. Overall safety was not at risk, as…
Had electrical trouble with your 2020 Toyota Camry?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2020 Toyota Camry?
It's a documented issue but not catastrophic. 57 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 24 complaints that reported odometer mileage, most electrical failures cluster between 2,678 and 25,000 miles, with the median around 6,000. A quarter of owners report trouble before 2,678; a quarter make it past 25,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Toyota/Camry.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.