Opel Zafira B: H7 COB LED Dipped Beam Fading Out, Canbus Decoder Issue & Bulb Compatibility

Hello. I have the following problem. I bought these LED bulbs:



Bulb data: Voltage: DC 9-32V
Current: 2.8A
Bulb Type: H7 Single Light
Power: 55W each bulb
Working efficiency: 98%

By connecting them directly with the engine off, the bulbs shine normally after firing, the voltage jumps at least 13.5V, the bulbs light up for a while and unfortunately, my car has Canbus rails
So I used this type of load:



Load data:
Item Type: Car Light Canbus Decoder
Voltage: DC 12V-14V
To Fit: Headlight Canbus
Power: 30-40W
EAN: 730052889079
MPN: WO730052889079

The right light bulb is flawlessly lit without a single excess since I installed it, while the other one lives its life but I don't know what to fault. It is so that after firing, I have to turn the lights off and on 3 times so that the left LED shines on longer sections, sometimes I drive 10km and it does not go out and sometimes it can go out twice per 1km.

Only now the question is why the right one is constantly lit and there are no problems and the left one has a problem if they are both on the same load?
What do you think is the fault of the load bulb or maybe too little loaded system?
Anyone suggest something?

greetings

Did you replace the bulbs in places?

Honestly, I did not change because it was a lot of fun to redo the inputs, disassembly of the air filter, etc., and it turned out after mounting everything and driving a few km. . Do you think that something such a change of places can change or more to check if it is the fault of the bulb or the load?

Well, just such a replacement will allow you to find out what may be the cause. If the failure follows the "bulb" and moves to the other side, the fault will be on the "bulb" side. If he stays on the same side, the fault should be found elsewhere and the "bulbs" at that point will be eliminated as a source of problems.

goldi74 wrote:

You swapped bulbs in places

This is where you have to start. (I feel sorry for this job)

If it turns out that the bulbs are in working order, you can turn off the bulb efficiency control in this car with the TECH2 diagnoscope.

Do you know where the light bulbs in the car come from, plus and mass? For me, like common, but from other fuses (L and P passing), and separating the mass into several cube wires, also, for example, the left one can be quite ok, and the right one is not necessarily.
With light bulbs, it's a new invention, and you are the tester for your own money.

I'll tell you this now. I traveled a few days with the light bulbs and it is known that I played with the switch more than once, but the problem has now disappeared, namely, the light bulbs without loads work on the engine off, you know less voltage, but on without loads they go out.
Now the question of why the left was fading out. It is winter, it is known that the efficiency of the battery is lower, smaller sections only finish it, in addition, electric support, so the charging in my car has dropped to 13.4-5V only when I drive a lot further, it can jump to 13.8-14V Now I have tested with loads On the turned off engine, I turn on the bulbs and the left one goes out, I have no idea how the lighting system is solved, but maybe the right one gets the voltage first and produces the same power as the left one goes out, I measured it with a meter and, for example, the right one is 12.5V and the left one is 12V but when I start the car, the voltage will jump to 13.3-4V, the left one also shines normally. When I start the engine and quickly turn on the lights before the voltage jumps to above 13V, the left one goes out but I turn off, wait for 13V and turn on and after the problem
The problem disappeared, of course, on the turned off engine, the left bulb goes out, but I have no idea how to solve it.
Now I know it is a question of voltage in the system, but I guess it's impossible to overcome :)

As for the lights, I will share with you that I have poor feelings about these bulbs, I ordered Chinese food and maybe that's why Philips would be good But I have installed a lot of problems, I have cut off the angle of light, so now I feel that they shine worse than traditional bulbs, only the color of the light is known to be better under xenon, but visibility is worse. Installation difficult - mounting adapted in H7 to hooked wires left right, that is as it always was, new hooks disqualify simple mounting, modification of the bulb mounting, etc. Right, I am a tester for my own money and I risk losing the registration certificate. It's good that I live in England, they don't cling here like in PL, I would have to really hurt my eyes so that they would take my papers

jacobsen92 wrote:

cars with canbus are so strange that sometimes you even have to get used to them, for example, as in this case, new light bulbs

jacobsen92 wrote:

I turn on the bulbs and the left one goes out, apparently the right one gets the voltage from the battery first

... very interesting theories ...

I understand that the topic is exhausted.
I close