MOT due - bulb out warning but all bulbs fine
- Thread starter Dr. Zed
- Start date
From their website says:Dr. Zed said:
Voltage monitoring >
Turn signals front voltage monit. 1/2
• on
• off
Voltage monitoring for turn signals front. Might cause flickering of LED lights. (codable in LSZ)
Turn signals front voltage monit. 2/2
• on
• off
Deactivate with ‘Turn signals front voltage monit. 1/2’ to disable flickering of LED lights. (codable in LSZ)
That should be the hot and cold checks.
Even with all the bulb warnings coded out my car still had fast flash and bulb out light on dash with all bulbs working and only running led side lights and the angel eyes, so In my experience a ground issue which I had due to the connector always getting wet can cause the car to act like a bulb was out and not coding out the sidelights check also causes this.
My guess is there is a poor connection somewhere or the load resistor has failed, at this point I would take the bumper off disconnect both lights and swap them around and see if it's the right light or the wiring on that side of the car.
My guess is there is a poor connection somewhere or the load resistor has failed, at this point I would take the bumper off disconnect both lights and swap them around and see if it's the right light or the wiring on that side of the car.
Believe so, *but* I have never used Carly, only NCS.Dr. Zed said:
Put it back to default and try the rear to rule that out. The sides might not be monitored.
Joez4 said:
This may be my only option now. So if the fault moves across I can assume it's wiring within the unit itself or the connector attached to the unit. If it doesn't move, it's likely to be the car end. Makes sense.
It's driving me insane. There's nothing wrong with the car and I just want it MOTd
Is a bulb failure warning light an MOT fail or just an advisory?
Have you thought about swapping the flasher unit from a load sensitive one to an LED one? They have a fixed flash rate regardless of the load or type of bulbs being used, some have an adjustable flash rate that you can fine tune. The downside is that you lose the fast flash rate that tells you a bulb might have gone.
Could be worth a try for under a tenner to get you through the MOT and then you can chase your fault at your leisure
Have you thought about swapping the flasher unit from a load sensitive one to an LED one? They have a fixed flash rate regardless of the load or type of bulbs being used, some have an adjustable flash rate that you can fine tune. The downside is that you lose the fast flash rate that tells you a bulb might have gone.
Could be worth a try for under a tenner to get you through the MOT and then you can chase your fault at your leisure
It's a simple plug and play, unplug the original flasher unit from where it lives behind the dash and plug in the new one.
Old style units depend on a certain load to make them flash at the correct speed, a blown bulb or bad resistor with LED bulbs lowers the load being sensed and causes the indicators to flash faster on the bad side.
Old style units depend on a certain load to make them flash at the correct speed, a blown bulb or bad resistor with LED bulbs lowers the load being sensed and causes the indicators to flash faster on the bad side.
Not familiar with this, where is it? Not something I've seen in the wiring diagrams, I thought all the functions just went through the LCZ.Stevepj said:
I have LEDs in some bulb applications, with no load resistors. Checks coded out and no issues with flash rate, because they're not being monitored in either state.Stevepj said:
So turning the checks off should rule that out, assuming Carly does that correctly.
They're German, I don't think there is a word for simple :lol:Stevepj said:
