Indicator stays on
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How did they test the operation. The MUT tool connected to the OBD port will report any diagnostic error codes for the system. There is a listed diagnostic for when the turn signal will not illuminate or go out but it involves the MUT tool and some tests.
I can sit in my garage with the engine running, apply the turn indicator (left or right) and the signal will be extinguished just by a short turn of the wheel in either direction (at about 11 o'clock and at 1 o'clock respectively) as the wheel is returned to the central position. It doesn't take a lot of movement to disengage the turn signal. I think it is all electric these days like the power steering and there is no mechanism like in the older vehicles where the steering column had a physical bump to disengage the spring loaded lever and return to the central off position.
Looking at the signal mechanism, it simply bolts to the side of the steering column and I surmise the turning of the wheel is picked up by the steering angler sensor mounted on the steering column. I also tested the process today when out and about and the signals were extinguished when the steering wheel was at either 11 or 1 on its return to the central position.
The steering angle sensor needs to be calibrated to find the true centre position but if the calibration were out you would likely see other strange happenings related to the steering and not just issues with the left indicator not going out.
My money is on a faulty turn signal switch which is operating intermittently. I suggest you take the dealer service rep for a ride with you to show him what you encounter with the operation.
I can sit in my garage with the engine running, apply the turn indicator (left or right) and the signal will be extinguished just by a short turn of the wheel in either direction (at about 11 o'clock and at 1 o'clock respectively) as the wheel is returned to the central position. It doesn't take a lot of movement to disengage the turn signal. I think it is all electric these days like the power steering and there is no mechanism like in the older vehicles where the steering column had a physical bump to disengage the spring loaded lever and return to the central off position.
Looking at the signal mechanism, it simply bolts to the side of the steering column and I surmise the turning of the wheel is picked up by the steering angler sensor mounted on the steering column. I also tested the process today when out and about and the signals were extinguished when the steering wheel was at either 11 or 1 on its return to the central position.
The steering angle sensor needs to be calibrated to find the true centre position but if the calibration were out you would likely see other strange happenings related to the steering and not just issues with the left indicator not going out.
My money is on a faulty turn signal switch which is operating intermittently. I suggest you take the dealer service rep for a ride with you to show him what you encounter with the operation.
Hi Zarbs
Many thanks for this. Surprisingly the mechanic did not bother to connect anything to anything. He did take it for a test drive and announced on his return that yes he could see where I was coming from but it was working correctly?? He told me that the mechanism was not electrical but was mechanical.
I have written to the CEO of Mitsubishi Uk but am being fobbed off. If you dont mind I will use your post when next I speak to the dealership.
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631 Posts
The part number for the lighting/turn indicator stalk is 8614A267. The attached pic is hard to see but the turn signal mechanism is on the right and the part is used in all Mitsubishi's by the part reading. There are no pins visible protruding into the central opening of the steering column switch where the steering column inserts into the switch. The removal process simply mentions opening a locking clamp (covered by the tag in this pic) and releasing a locking clamp/pin from the mating groove in the steering column, which would ensure the switch is centred on the column assembly, and sliding it backwards off the column assembly. This locking clip is top centre (accessed from the rear near the dash display) of the steering switch away from the turn switch.
![1118]()
![1119]()
The stalk itself in the workshop manual drawing shows no protrusions on the lighting stalk (3) base into the mechanism of the steering column switch (4) in the line drawing. Given the thickness of the steering column switch itself (as seen in the first pic) and the surrounding plastics one would expect the service drawing to accurately depict any detent pin that would be activated by any mechanical cancel motion. The installation process does not make any mention of taking care to ensure correct insertion of any mechanical cancel mechanism into the steering column switch when installing the lighting stalk. So, my money is on an electrical connection not mechanical. The lighting switch itself looks to be clipped into the steering column switch using tabs at the bottom and then secured by a single bolt tightened to the displayed torque setting.
Having said all this it is possible that the steering column switch contains a pickup which is activated by the steering column during rotation through magnetic flux (like that used in 2 strokes to generate the spark) or the like that sends an electric pulse to the active turn signal and a central solenoid or such releases the lever from its spring tension back to the central off position. The only way to tell for sure would be to see the actual stalk removed from the vehicles steering column switch. I can't find any on my search of the IoT and most sites selling the part just show the Mitsubishi part label and no other info.
The stalk itself in the workshop manual drawing shows no protrusions on the lighting stalk (3) base into the mechanism of the steering column switch (4) in the line drawing. Given the thickness of the steering column switch itself (as seen in the first pic) and the surrounding plastics one would expect the service drawing to accurately depict any detent pin that would be activated by any mechanical cancel motion. The installation process does not make any mention of taking care to ensure correct insertion of any mechanical cancel mechanism into the steering column switch when installing the lighting stalk. So, my money is on an electrical connection not mechanical. The lighting switch itself looks to be clipped into the steering column switch using tabs at the bottom and then secured by a single bolt tightened to the displayed torque setting.
Having said all this it is possible that the steering column switch contains a pickup which is activated by the steering column during rotation through magnetic flux (like that used in 2 strokes to generate the spark) or the like that sends an electric pulse to the active turn signal and a central solenoid or such releases the lever from its spring tension back to the central off position. The only way to tell for sure would be to see the actual stalk removed from the vehicles steering column switch. I can't find any on my search of the IoT and most sites selling the part just show the Mitsubishi part label and no other info.
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