Symptoms of a Bad or Failing Turn Signal Bulb

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Cost of Replacing a Bad or Failing Turn Signal Bulb

Common signs include the turn signal indicator coming solid, blinking very fast, and the turn light bulbs themselves not blinking. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Turn Signal Bulb Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2003 Ford Taurus $80 $9.76 $70.00 31% $117.26
2005 Toyota Camry $80 $9.81 $70.00 31% $117.31
2012 Chevrolet Cruze $80 $9.83 $70.00 31% $117.33
2014 Infiniti QX70 $83 $13.26 $70.00 31% $120.76
2014 Lincoln MKX $75 $4.83 $70.00 33% $112.33
2010 BMW M5 $80 $9.73 $70.00 31% $117.23
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How to Diagnose a Bad or Failing Turn Signal Bulb?

turn signal bulb

Turn signal light bulbs are a common “wear and tear” item in your vehicle electrical system. The bulbs on most vehicles utilize a filament that literally burns up, in the same way that old incandescent household light bulbs would burn out at home. In some cases, a bad connection due to corrosion at the light bulb socket, or a wiring issue to the light bulb, can also cause a “no turn signal” condition. Since turn signals trigger both a front and rear turn bulb, most bulb failure scenarios can be easily diagnosed, although repair may best be left to a professional who will replace the turn signal light bulb. Some of the symptoms of a failed turn signal light bulb include:

1. Turn signal indicator in the instrument cluster comes on solid and does not blink

This is a common failure mode, and can be checked while your vehicle is stationary in your driveway or other safe location. To check to see whether it’s the front or rear turn signal bulb that has failed, walk around the vehicle after selecting a turn signal direction, to see which of the turn lights (for the turn side you selected), front or rear, is not illuminated. For example, a solid turn indicator for a left turn, with the front turn bulb on constantly, but no left rear turn bulb illuminated, indicates that the left rear turn light bulb has failed.

2. Turn signal indicator blinks very fast

This is another common failure mode. To check to see whether it’s the front or rear turn signal light bulb that has failed, walk around the vehicle (stationary and in a safe location of course!) to see which of the turn lights (for the turn side you selected), front or rear, is not illuminated. For example, a rapidly flashing turn indicator for a right turn, with the right front turn bulb blinking rapidly, but no right rear turn bulb, indicates that the right rear turn light bulb has failed.

3. Both turn light bulbs on the left, or both turn light bulbs on the right, do not blink

This is a common failure condition of the turn signal switch itself. A YourMechanic professional should inspect this condition and replace the turn signal switch if necessary.

4. Both right and left turn indicators do not work properly

This symptom may be observed if the hazard warning/turn signal flasher unit, which is integrated, itself has failed. This can be verified by pressing the hazard warning button in your vehicle. CAUTION: Only perform this test off the road in a safe location! If the left AND right turn signal indicator lights do not flash as expected, it is likely the hazard warning and turn signal flasher unit has failed. If the symptoms and diagnosis above indicate that the hazard warning and turn signal flasher unit has failed, a professional mechanic can replace the hazard warning and turn signal flasher unit.

Another possibility for this symptom is that an electrical overload in the turn signal circuitry has caused a fuse to blow, protecting the circuit, but not allowing the turn signals to function. A YourMechanic turn signal inspection will identify if this is the case.

turn signals

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Recent Turn Signal Bulb Replacement reviews

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YourMechanic Turn Signal Bulb Replacement Service

Average Rating

4.6/5

Number of Reviews

107

Rating Summary
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Brian

18 years of experience
44 reviews
Brian
18 years of experience
Timely, friendly and professional
2013 NISSAN MURANO - TURN SIGNAL BULB REPLACEMENT (FRONT) - PHOENIX, ARIZONA

Theodore

13 years of experience
819 reviews
Theodore
13 years of experience
Professional, friendly, knowledgeable and punctual! Definitely will call Theodore again!
2003 BMW X5 - TURN SIGNAL BULB REPLACEMENT (FRONT) - BELLEVUE, WASHINGTON

Peter

33 years of experience
346 reviews
Peter
33 years of experience
Peter was passionate and professional. He has been in the business for a long time and it was a pleasure leaving my car in his hands. Thank you!!
2006 HYUNDAI ELANTRA - TURN SIGNAL BULB REPLACEMENT (REAR) - SAN DIEGO, CALIFORNIA

Lucas

18 years of experience
767 reviews
Lucas
18 years of experience
Great knowledge and efficiency in completing the task at hand.
2012 NISSAN ROGUE - TURN SIGNAL BULB REPLACEMENT (FRONT) - WEST HOLLYWOOD, CALIFORNIA

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