Turn Signal Not Working — What It Is, and What It Costs

How real visits for a turn signal problem ended at independent shops across the US — the part actually replaced, how often, and what it cost when it was the only fix.

Bulb

The single most common outcome — nearly half of these visits when combined with the runner-up

Bulb $38 – $146

Light assembly $58 – $262

typical cost when it was the only fix
(parts + labor)

The fix involved	Share of these visits*	Typical cost†	Median
Bulb	59.6%	$38 – $146	$73
Light assembly	17.5%	$58 – $262	$130
Switch	14.8%	$126 – $344	$216
Fuse	3.6%	$56 – $239	$115
Other, rarer causes	smaller shares — flasher relays, sockets, hazard switches	varies	—

*Share of visits whose repair involved this part; combined repairs count toward each part, so shares overlap and don't add to 100%. †Middle half of real invoices when this was the only fix — parts + labor, all vehicle types.

Which one is yours? Listen first

Blinking fast on one side — Hyper-flashing is the circuit noticing a dead bulb and is the cheapest outcome in this family.
No signals at all — When neither side blinks, the bulbs are innocent — the flasher relay or the column switch is the usual finding.
Works, but only sometimes — Signals that cut out with a warm cabin or work when the stalk is held just so are the classic worn-switch story — mention the pattern to the shop and you'll save diagnostic time.

What to expect from the shop

Fast blinking on one side is a dead bulb — the cheap fix. No signals on either side points at the flasher or the column switch. Expect the shop to check bulbs and sockets before quoting a switch; a corroded socket is common in the rear.

About this data · How to use this brief

Vehicles all makes and models, US fleet
Data confidence High — large sample, stable shares
Records through July 2026, refreshed continuously
Source paid invoices from independent US repair shops

Take it to the shop. It tells you what the likely answers are and what each one should cost — so when the diagnosis comes back, you already know whether the number fits. Vehicle-specific price reports for the common fixes are on fixdozer.com.