Loading...

Audi A4 Quattro Hazard Warning and Turn Signal Flashers

Audi A4 Quattro Hazard warning and turn signal flashers

Starting at $20.95, AutoBuffy stocks 2 hazard warning and turn signal flashers from Standard Ignition to fit the Audi A4 Quattro. The flasher relay controls the timed on-off cycle for your turn signals and hazard lights. When it fails, signals may stop blinking entirely or flash at the wrong speed, creating a genuine safety hazard for lane changes and roadside emergencies.

Signs your Audi A4 Quattro needs a new hazard warning and turn signal flasher

  • Turn signals flash noticeably faster or slower than normal (hyper-flash or slow flash)
  • Turn signals click audibly but no lights blink on the dash or externally
  • Hazard lights fail to activate or stop mid-cycle when the button is pressed
  • One side signals work correctly while the other side is completely dead
  • Dashboard turn signal indicator light stays on solid instead of blinking
  • Turn signals work intermittently — functioning on some trips but not others

Which hazard warning and turn signal flasher should you buy for your Audi A4 Quattro?

The main decision is whether to buy a direct-fit OEM-style replacement or a universal unit. For most drivers, a vehicle-specific flasher is the right call — it plugs into the existing socket without rewiring and maintains the correct flash rate. If your Audi A4 Quattro uses LED bulbs or you have already upgraded to LEDs, you will also need to confirm the flasher is LED-compatible, since standard thermal flashers will hyper-flash with low-draw LED loads.

OEM-Style Direct-Fit Replacement
Best for
Drivers who want a no-hassle, plug-and-play fix with incandescent bulbs
What you get
Exact socket fit, correct factory flash rate, no wiring changes required
LED-Compatible Electronic Flasher
Best for
Vehicles with factory or aftermarket LED turn signal bulbs
What you get
Fixed electronic timing that prevents hyper-flash regardless of bulb load
Universal Adjustable Flasher
Best for
Custom builds or situations where exact-fit units are unavailable
What you get
Adjustable flash rate via screw or potentiometer; may require splicing or adapter
OEM Dealer Unit
Best for
Owners who want factory-spec parts with full manufacturer backing
What you get
Guaranteed fit and spec match; typically the highest price option

Hazard warning and turn signal flashers brands we stock for your Audi A4 Quattro

Standard Ignition
2 options · from $20.95

Replacing the hazard warning and turn signal flasher on a Audi A4 Quattro

Easy⏱ 15–45 minutesFlathead screwdriver or trim panel toolNeedle-nose pliers (for stubborn relay extraction)Flashlight or work lightOwner's manual or fuse-box diagram

Locate the flasher relay using the Audi A4 Quattro fuse-box diagram — it is typically a plug-in relay in the interior or engine-bay fuse panel. With the ignition off, pull the old relay straight out and press the new one firmly into the same socket until it seats. Restore power, test both turn signals and the hazard function in all directions before returning to the road.

Frequently asked questions

How much does it cost to replace hazard warning and turn signal flashers on a Audi A4 Quattro?
Parts start at $20.95 for the Audi A4 Quattro at AutoBuffy. The flasher relay itself is an inexpensive component. If you replace it yourself, the part cost is your main expense. Shop labor for this repair is typically minimal since access is usually straightforward, though location varies by vehicle.
Where is the turn signal flasher located on a Audi A4 Quattro?
On most vehicles, the flasher relay is mounted inside the fuse and relay box, either under the dashboard near the steering column or in the engine-bay fuse panel. Some older vehicles use a separate plug-in canister behind the dash. Consulting the Audi A4 Quattro owner's manual or fuse-box diagram will identify the exact slot.
Can a bad flasher cause turn signals to not work at all on a Audi A4 Quattro?
Yes. A completely failed flasher relay can cut power to the entire turn signal and hazard circuit, leaving signals non-functional in both directions. Before replacing the flasher, also check for a blown fuse and burned-out bulbs, since those produce identical symptoms and are even cheaper to fix.
Will upgrading to LED bulbs cause hyper-flash on a Audi A4 Quattro?
In most cases, yes. Standard thermal or electromechanical flashers detect load by current draw. LED bulbs draw significantly less current than incandescent bulbs, so the flasher interprets this as a burned-out bulb and speeds up the flash rate. Installing an LED-compatible electronic flasher corrects this without adding load resistors.
How long does a hazard warning and turn signal flasher last?
Flasher relays are generally long-lived components that can last the life of the vehicle under normal use. Failure is more often triggered by electrical faults, moisture intrusion, or heat exposure than by age alone. Frequent short trips with heavy hazard light use can also accelerate wear on older electromechanical units.
Is it safe to drive a Audi A4 Quattro with a faulty turn signal flasher?
No. Non-functioning or erratic turn signals prevent other drivers and pedestrians from anticipating your lane changes and turns. Hazard lights that do not work also leave you without a warning system during a breakdown. Most jurisdictions require working turn signals by law, so the flasher should be replaced promptly.

Shop hazard warning and turn signal flashers by year for the Audi A4 Quattro

199819971996

More parts for your Audi A4 Quattro

Engine Crankcase Breather HoseEngine Coolant Thermostat HousingBrake Bleeder Screw CapHigh Intensity Discharge (HID) Lighting BallastHVAC Heater Control Valve O-RingEngine Timing Crankshaft GearIgnition Coil KitA/C Drive Belt Tensioner

Hazard warning and turn signal flashers for other Audi models

Audi S6Audi A8 QuattroAudi 80Audi QuattroAudi S4Audi Cabriolet