Audi Q4 e-tron Lemon Law

The Q4 e-tron relies on an on-board charger and integrated DC/DC converter (the OCDC unit) to convert charging current and to keep the low-voltage 12-volt battery topped up. On affected vehicles, condensation can form on the unit's printed circuit board because the protective coating is insufficient, causing an electrical short that makes the charger fail.

When the OCDC fails, the Q4 e-tron may stop charging the 12-volt battery and put warning messages and audible alerts on the instrument cluster. If the low-voltage battery is allowed to discharge, the vehicle can lose electronically controlled and assisted functions and, ultimately, drive power — a serious safety risk that can strand the driver.

Audi has addressed this defect by replacing the OCDC with a revised unit that has better moisture protection. But when the replacement is backordered, the repair doesn't hold, or the charging and power-loss symptoms keep returning, California's Lemon Law may entitle you to a buyback or replacement — with Audi paying your attorney fees.

The pattern we hear most often on Q4 e-tron calls is not a car that died once. It is a car that keeps producing warnings the dealer cannot reproduce on demand. You bring it in, the fault is not stored, you are sent home, and a week later the 12-volt battery is flat again. Each of those visits belongs on a repair order even when the dealer writes "no problem found" — under California law, an attempted repair still counts as an attempt.

Waiting on parts matters just as much. An electric SUV that sits at the dealer for weeks waiting on a replacement OCDC is accumulating days out of service, and 30 or more cumulative days across the warranty period is one of the ways a claim is presumed reasonable. Those days do not have to be consecutive, and a loaner does not stop the clock — what matters is that your vehicle is out of service.

There is one thing that works in your favor on an Audi specifically. Audi did not opt into California's AB 1755 procedures, so the tighter one-year-and-six-year deadlines that apply to brands like Jeep, Ford, Hyundai and Mercedes-Benz do not apply here. An Audi claim runs on the traditional four-year statute of limitations, measured from when you discovered the defect rather than from the date the car was delivered. An older Q4 e-tron can still be a live claim where the same-age Chevrolet or Hyundai would already be time-barred.

A recall is not automatically a lemon — a recall is Audi acknowledging a defect and offering a free fix. California's Lemon Law, the Song-Beverly Consumer Warranty Act, applies when a substantial warranty-covered defect survives a reasonable number of repair attempts. For a defect that can cause a loss of drive power, two attempts can be enough; there is no fixed number, and the safety character of the defect is part of what makes a number reasonable.

If your Q4 e-tron qualifies, the remedies are a buyback — a refund of what you have paid, less a mileage offset calculated from the miles you drove before the first repair attempt — a replacement vehicle, or a cash-and-keep settlement if you would rather keep the car. On a successful claim Audi pays your attorney fees, so pursuing it costs you nothing out of pocket.

A recall is not automatically a lemon — it's the manufacturer acknowledging a defect and offering a free repair. California's Lemon Law (the Song-Beverly Act) comes into play when a substantial defect can't be fixed after a reasonable number of attempts, or when your Q4 e-tron has been out of service for 30 or more cumulative days.

If your Audi Q4 e-tron qualifies, you may be entitled to a buyback (a refund of what you've paid, minus a mileage offset), a replacement vehicle, or a cash-and-keep settlement — and Audi pays your attorney fees on a successful claim, so pursuing your case costs you nothing out of pocket.