Whether for your personal safety, for roadworthiness testing or to avoid a fine, being sure your turn signal bulbs are constantly functional is imperative. Surely, bulbs are wearing parts that will obviously burn out in the long run and consequently need to be swapped out. You’re certainly here because one of your rear turn signals is burnt out and you’re worried about how to change the bulb of a rear turn signal on you BMW 4 Series, we’ve written this post to enable you do it alone without having to go to your auto technician. To begin , we will have a look at the checking a burnt-out rear turn signal bulb on your BMW 4 Series and in a second step, how to change the rear turn signal bulb on your BMW 4 Series.

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How to find out if the rear turn signal bulb on your BMW 4 Series is burnt-out or needs to be changed?

When you drive your car you don’t constantly have the opportunity to verify all the safety features of your BMW 4 Series. Surely, you are quite often in a rush and are likely to get into your car, make your trip and put it down right away without taking the time to do an occasional check-up. It is therefore important to take a little time to occasionally verify the condition of your headlights and turn signals. It’s quite possible that you have a burnt-out rear turn signal on your BMW 4 Series, but you didn’t perceive it. Here are the two ordinary methods to verify if a rear turn signal on your car is out of order or if you need to change it as soon as possible:

  • When you stop, turn on the ignition on your BMW 4 Series, then alternately turn on your left and right rear turn signals and get out of the car to verify that they are operational.
  • By paying attention to the sound of your turn signals. In actual fact, there is an audible warning on each car that informs you of a rear turn signal bulb burnt out on your BMW 4 Series, you will perceive that the time between each “click” is much shorter, this suggests that that you will have to change the rear turn signal bulb or before. It’s up to you to examine and validate which one is burnt out by a visual check as on the first strategy shown above.

You may have another bulb to change, like the one of your low beam BMW 4 Series or your position lights on BMW 4 Series, don’t be reluctant to consult our publications to help you to do this replacement.

Changing the rear turn signal bulb on my BMW 4 Series

Now let’s go to the most instersting step of this content page, how to change the rear turn signal bulb on BMW 4 Series? Take note that this method is quite easy, you will need to access, from the inside of your trunk, your headlight unit, open it and change the burnt out rear turn signal bulb on your car. If it is a bulb on your front turn signal on your BMW 4 Series, see our dedicated article content. Nevertheless, here are the detailed steps to carry out in order to execute this act correctly:

  • To access the tail light set up, remove the carpeting or plastic cover to access the tail light assembly.
  • Use a screwdriver or torx wrench (6-pointed star) to open the tail light assembly.
  • Take out the rear indicator bulb from your burnt-out turn signal that you have earlier in this article diagnosed by an external visual inspection, for this you will need to make a quarter turn in a counter-clockwise direction
  • Replace the rear turn signal bulb on your BMW 4 Series. There are two sort of bulbs, transparent bulbs when the cover is orange, or orange bulbs when the cover is transparent, choose the right model for your car
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  • Put back in place your rear turn signal bulb and close your tail light block, then, verify your new turn signal bulb is working correctly

In the event that you have any further questions about the BMW 4 Series, do not hesitate to consult our BMW 4 Series category.