An extra-fast left flasher typically indicates a malfunction in the turn signal circuit, often due to a burned-out bulb or a poor connection. The flasher relay is designed to flash at a specific rate, and when it detects a lower load (like a missing bulb), it compensates by flashing more rapidly. This is a warning signal for drivers to check the turn signals for proper functioning.
short or wrong bulbs
Check the bulb, it could be blown.
It is possible one of the left side light bulbs is burnt out. A burbt out bulb will cause a higher current to pass through the flasher component and the flasher will rapidly cycle on and off.
I believe the hazard switch is used as the turn signal flasher in 71 bus. No extra flasher involved... I believe the hazard switch is used as the turn signal flasher in 71 bus. No extra flasher involved...
Same flasher for left and right signals but a different flasher for the emergency flashers.
A fast-blinking left turn signal in your Audi TT typically indicates a faulty bulb or a broken connection in the left turn signal circuit. When one bulb is out, the flasher relay speeds up to alert the driver of the issue. Check the left turn signal bulb for damage or failure, and inspect the wiring for any signs of corrosion or disconnection. If the bulb and connections are fine, the flasher relay itself may need replacement.
Check bulbs Replace flasher
My Flasher unit is clicking real fast but the turn signal does not work. Is this the flasher or a furse?
your flasher is a combination unit turn & flasher on top of your diagnostics test unit on the left side of steering column
The turn signal and brake light use the same bulb. When you get a fast flash, it is from a reduced electrical load being placed on the flasher unit due to a burned bulb. Replace the bulb and this should fix your problem.
Probably, the original flasher in the tow vehicle is not designed to carry the load of the extra lights on the trailer.
The flasher is a rectangular unit located under the dashboard on the "kick" panel, to the left of the driver's left foot.