Telltales of Troublesome Turn Signal Switches
In a whim, you can tell everyone your intention to swerve to the left and to the right, thanks to the turn signal switch. The turn signal switch is a kind of relay that operates the signal lights at the front and rear of the car. But, what if you intend to change directions, then suddenly you hear a loud thud. You've been hit by another car. After all the hassle and the paper work, the cause of the accident: defective turn signals. Although very rare in occurrence, electrical difficulties in these switches necessitate a replace with the switch assembly. In order to avoid being a moving safety hazard, keep an eye on these warning signs of a failing turn signal switch before it becomes inoperable.
One turn signal does not light up.
When you activate the turn signal switch and it does not operate one of the signal lights, most of the time the bulb needs to be replaced. However, if the turn signal switch is the origin of the problem, chances are the contacts or the actuators in one of the positions aren't coupling. You might need to check for dirty contacts, disconnected ground, or broken components that may not be seating properly in the socket.
Both turn signals don't light up.
If both turn signals don't light up and you have already checked the status of the bulbs, there's a large chance that the turn signal switches have a loose connection. You should inspect the grounding in both sockets and see if there are any parts that have been dislodged. Sometimes, even if the turn signal switches have already been inspected, the culprit may be the fuse. Don't forget to check it out also.
Turn signals do not flash.
There are certain instances that the turn signals do light up but are not flashing. In this particular case, you need to examine the flasher located near the turn signal switch. Usually the flashers need replacing once this happens. Once it has been replaced, you will find the turn signals will flash again.
Turn signal flashes at abnormal speeds.
The turn signals flash in a deliberate and steady pace once activated. But there is more than one scenario when they flash more rapid or slower than usual. Either way, there may be an incorrect bulb installed. Check if the voltage of the bulb is compatible with the fuse and the actuators.
The Three-Point Checklist for Maintaining Your Saturn Vue Turn Signal Switch
The turn signal switch readily operates the signal lights at the simple push or pull of a lever. Mechanically speaking, it's a relay that activates a set of devices. Since it is basically controlled electronically, difficulties occur somewhere in between those connections. It is usually necessary to replace the switch assembly. However, that's not always the case. You can follow this three-point checklist In order to avoid falsely diagnosing a bad turn switch signal and to avert being a safety hazard to others.
Check the flasher.
The flashers, or the blinkers (whatever you want to call it), is the device that's responsible for making the signal light flash instead of just staying on the whole time. Most of the time, a problem with the flashers is wrongly diagnosed as a malfunctioning turn signal switch. In order to check this, you must see whether the signal light on the dash blinks or stays lit without blinking. If the signal light stays on but does not blink then the problem is with the turn signal flasher. Replace the flasher as needed.
Check the fuse.
Since the turn signal switch relays electricity to the turn signals, a fuse is fitted in order to regulate the power. If the dash turn signal indicators do not illuminate in either direction, there is a problem with the power or wiring. To know if it is a concern in connection with the fuse, check the fuse box. The fuse box can be found just to the left of the steering column, under the dash or on the side of the dash, facing the door. See if the fuse has blown, then replace it with the same size fuse.
Check the wiring.
By far the trickiest among the checkpoints, testing the switch output directly requires disassembling the steering column to access the switch wiring harness. The turn signal switch has a power-in and ground wires for power signal to the switch. If there's no power in the switch, but there's power in the signal fuse, then the problem lies between the switch and fuse panel. If there's power in the switch, then test the switch's power-output wires. No output signal means the switch is broken. Use a multimeter to probe these wires. A signal or reading tells you that there's power flowing through the wires otherwise, there isn't and you need to replace the affected parts.