The Lemon IndexWhen many warning lights come on at once, the cause is often electrical: a weak battery, a charging problem or a module that lost contact.
Fix soon. Get it checked soon. If the battery light is on too, drive only as far as a shop.
A failing alternator or weak battery (low voltage). Then: a bad ground connection; a network or module fault.
Owners describe this in 7,423 complaints to the U.S. government, most often on the Honda Accord.
Cars owners report it on most
Complaints describing this symptom, by model, all years. Raw counts, not a failure rate: popular models get more complaints.
Model years that report it most
| Model year | Complaints | Share |
|---|---|---|
| 2018 Honda Accord | 123 | 6% |
| 2017 Honda CR-V | 93 | 5% |
| 2018 Honda CR-V | 87 | 4% |
| 2007 Jeep Wrangler | 79 | 5% |
| 2016 Honda Pilot | 70 | 4% |
| 2019 Honda Accord | 61 | 8% |
| 2007 Toyota Camry | 54 | 1% |
| 2019 Honda CR-V | 47 | 4% |
| 2017 Jeep Cherokee | 46 | 3% |
| 2010 Toyota Prius | 44 | 2% |
| 2006 Jeep Commander | 43 | 2% |
| 2011 Hyundai Sonata | 43 | 1% |
Each row is that model year's record in NHTSA complaints, not the history of any one car. Share = complaints describing this symptom out of every complaint we hold for that model year (shown when the year has 50+ complaints).
Where it makes up the biggest share
2016 Honda HR-V · 8% 2019 Honda Accord · 8% 2017 Acura MDX · 7% 2004 Toyota Prius · 6% 2018 Honda Accord · 6% 2020 Honda Accord · 6% 2021 Honda Accord · 6% 2011 Dodge Challenger · 6%
Model years with 150+ complaints in our data and 10+ describing this symptom, ranked by share. A high share means owners of that year who complained often mentioned it.
The details
Common causes of all dashboard warning lights on
- A failing alternator or weak battery (low voltage)
- A bad ground connection
- A network or module fault
- A faulty wheel speed sensor triggering several systems
- Water in a connector
General causes, not a diagnosis. A shop should confirm the cause with tests before replacing parts.
Is it safe to drive with all the dashboard warning lights on?
Fix soon. Get it checked soon. If the battery light is on too, drive only as far as a shop.
Get help right away if the car loses power or steering; the red brake or oil light is on.
Of the 7,423 complaints describing it, 2% mention a crash, 8% say the car was towed, 3% mention a fire and 0.8% report an injury.
What the complaints show
The parts owners filed these complaints under: electrical system (45%), engine (31%), power train (15%), service brakes (12%). A complaint can list more than one.
Median odometer reading when owners reported it: 68,000 miles.
Most reports by make: Honda (1,150), Jeep (849), Ford (711), Toyota (593), Chevrolet (580).
What owners say it cost to fix
Repair bills owners named in complaints that describe this symptom (electrical repairs): the middle half ran $700 to $2,200, typical $1,000, from 94 bills.
Each figure is one repair bill as an owner wrote it in a complaint, not a quote for your car. Prices vary with the part, the shop and the year.
Engine codes that come up with it
C1391 P0087 P0172 P0303 U0100 U0101 C1252 C1256
Trouble codes owners named in these complaints more often than in other symptom complaints. Look up any code →
Related symptoms
Car loses power while driving Car won't start Car battery keeps dying Headlights not working Speedometer not working Power window not working
Quick answers
What causes all dashboard warning lights on?
When many warning lights come on at once, the cause is often electrical: a weak battery, a charging problem or a module that lost contact. Common causes: a failing alternator or weak battery (low voltage); a bad ground connection; a network or module fault; a faulty wheel speed sensor triggering several systems; water in a connector.
Is it safe to drive with all the dashboard warning lights on?
Fix soon. Get it checked soon. If the battery light is on too, drive only as far as a shop.
Which cars have this problem most?
In complaints to NHTSA, owners describe it most on the Honda Accord, Honda CR-V and Toyota Prius. These are raw counts, so popular models rank higher; complaints are owner reports, not proof of a defect.
How much does it cost to fix?
In 94 repair bills owners named in complaints describing it, the middle half ran $700 to $2,200. The right repair depends on the cause.
Counts: NHTSA owner complaints whose text describes this symptom (we matched owners' own wording, then read samples to check the matches). A complaint is an owner's report, not a diagnosis or proof of a defect. Causes and advice are general information in our own words, not repair advice for your car. Every symptom · Engine code lookup