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if you are a "car idiot" I definitely dont recommend these, as they will give you small troubles all the time (a couple of times not engaged in gears etc in my 13 years experience). If you kinda know what you are doing in terms of maintenance, they drive quite nice, if you maintain the transmission regularly. I never had anything major in the last 13 years.

could be anything, you will need a lexia 3 to diagnose, in my case, it was leaking turbo system.

Normally, european cars will give us a lot of opportunities to swear. You are surely not alone

you are exactly right, it is very hard to diagnose and hard to fix too, everything is in a place that is not easily accessible. To be completely honest, when it works, this car drives quite nice, and EP6 engine is well designed. However when problem occurrs it is nightmare. I finally ended up getting a Lexia 3 scanner to get the problem sorted, and you are right, about 70 error codes in there and you never know which one really caused the problem! :)

@@liyisu yes true what you said. I fixed the problem now. I have Citroen c4 picasso 2015 benzine and it doesnt have oil check in the board computer. So i checked my oil in the motor and its was empty dry. So i put 1,5 liter 3v50 oil and the service light and stop sign didnt pop out anymore. so maybe for people who have citroen it can be helpful. Have a blessed day

normally the filter is built in, and you cannot access it without taking the sump off.

Petrol 1.6 turbo,egs 6 speed

I have 2012 C4 diesel was wondering is it same gearbox and can 75w-80 also be used ?

@@majbah7so long as it is an EGS transmission model, it will work, doesnt matter if it is diesel or petrol. hope this helps.

I think it’s a egs model it has paddle shift behind steering wheel.

unfortunately my friend, I cant read what you said.... :)

nah, there is no way you can check it anyway, just need to measure the correct amount and fill as per repair manual.

@@liyisu thank you for your reply so basically just measure how much i take out and put same amount back in yes? My car is 2013 508 sw 1.6hdi im pretty sure its same gearbox

@@brostv7332 you are welcome! basically yes, just get a measuring jug to measure how much you have drained, and put the same amount back. Ideally if you can get the service manual it should tell you how much, id you dont have it, you cant really go wrong by refilling the same amount you have just taken out.

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

@@liyisu actually they told me that in this case a relay burns out in the control unit which is impossible to change so we need the new control unit 🤦‍♂️

@@domenicoperrupato6759 very likely! like I said, it could a lot of reasons, for this fan max speed + warning tones, it could be anything from turbo system, cooling, air intake, to up to something like you said a relay, a fuse somewhere, etc, so no there is no easy / one solution suits all fix for this problem, unfortunately.

​@@domenicoperrupato6759Hi same problem which control unit?

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

As the reply just before your comment mate

yes, the work is very complicated.

@@liyisu How did you fix this??

How fix it please ​@@liyisu

The safe way is to measure the fluid that has been drained out in a measuring container. I measured mine it is 1.8 litres, but with all the unintentional losses (spills, splashes, residue, etc), I think 1.9l is the amount I would recommend. as of the viscosity itself, if you are from an area there is no big winter/summer temperature difference, you can use single grade ones like 75W. However I personally prefer multi grade ones. Please note that this vehicle specific, and it is for the 2012 model.

@@liyisu mine is 2014 c4 b7 it's just an ehdi, 75w is fully synthetic, the 75w90 not🤔

Glad to be of assistance!

Thanks buddy - definitely change it, and you will feel the difference straight away.

Although I still believe it is a minor issue, i ended up replacing the whole ecu to get rid of the problem - not a cheap fix i am afraid. If you happened to have a chance to lay your hand on a lexia 3, you might be able to do some diggings before replacing the ecu. But unfortunately, i didnt have one.

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

Din55 / din66

thanks so much mate, I never consider that, and I will defnitely have a look! :)

checked F8, and checked a number of other fuses, all good.....nothing broken..... :( I suspect the one you are talking about is the electric pump that keeps the water running to cool turbo down? There are two pumps in these models, one main mechanical pump cooling the system when the engine is running, and one small electric pump, keeping the coolant flow in a low speed after you the turn the car off, to cool down the turbo system. Is this the one you talked about?

Although I still believe it is a minor issue, i ended up replacing the whole ecu to get rid of the problem - not a cheap fix i am afraid. If you happened to have a chance to lay your hand on a lexia 3, you might be able to do some diggings before replacing the ecu. But unfortunately, i didnt have one.

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

@@liyisu I sorted it the wrong wire 12v was connected to sensor we found correct wire with correct 6 volts but the sensor was now shorted by having 12v through it so gave false reading. New sensor fitted and all works correct.

⁠​⁠@@uke4915 hello sorry for my bad English i’m french so i have the same problem The mechanic reversed the sockets as your case except that even by putting everything back normally and changing the temperature sensor always the same problem Have you put an original temperature sensor ? i really need your help

Although I still believe it is a minor issue, i ended up replacing the whole ecu to get rid of the problem - not a cheap fix i am afraid. If you happened to have a chance to lay your hand on a lexia 3, you might be able to do some diggings before replacing the ecu. But unfortunately, i didnt have one.

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

No. This kind of flowing indicators have the flashing controller built in, so the need to be supplied with constant power, that's why he bypasses the relay. Most non 'flowing effect' LED indicators need a LED relay.

still not solved my friend! haha

It is actually quite complicated. I ended up buying a set of LEXIA 3 to diagnose it. In my case it is a turbo system leaking, resulting in the fan kicking in max speed. However, after my studies, I know a lot of faults could cause this. Without the LEXIA 3, it is really hard to pinpoint to the bottom of it. Unless you are an expert and can read from the data stream to know which part of it goes wrong. If the latter, you can use any scanner to read the engine running data, and draw your own conclusion. Otherwise, LEXIA 3 is the way to go for Citroen, Peugoet, and Fiat cars.

the increase in not that noticeable, if it is a big difference it is definitely something not quite right down the line.

this one is different than an auto transmission, so there is no need to "drain as much as possible", basically when you undo the plug, it drains it all. I measured the fuild drained, it is 1.9l as per service manual. yes it was darker and no need to change it with warm engine (unlike engine oil), but warm engine is better as it make the fluid flow better. Its definitely worth it, you can feel the smoother gear change immediately after that.

@@liyisu Thank you. How many newton metres with torque wrench spanner should be applied when screwing back the plug after drain, can I make a mark before I loosen the screw so I can screw it back to same position after a drain? Did you have to change any packing or something else to avoid oil leakage, how many gasket rings/washers would be needed, two? This square oil drain plug for Citroen etc is 8mm, I wonder, because you said 7mm key, if maybe you meant 8mm? This drain plug key's outer side is hex-shaped so it can be gripped with a wrench so i think it's the better one compared to the round one in below paragraph: ae01.alicdn.com/kf/H1d4c4c82cdc1462988f8d559b500d912L/8mm-5-16-Square-Oil-Drain-Plug-Key-Removal-Tool-for-Citroen-Peugeot-Renault-New-Arrival.jpg_q50.jpg Idk why the shape of the outer side around the female socket is round because it makes it impossible to get a grip on it with a wrench? i.ebayimg.com/00/s/MTAwMFgxMDAw/z/hD4AAOSwnCxasbXH/$_3.JPG "Features: Material: Chrome Vanadium Steel Oil sump plug key 8mm square head with 3/8 drive Ideal for the following applications: For Citroen - Gearbox & Sump Did you turn on the engine to flush out the small rests? Scotty Kilmer says the engine should be off to avoid damaging the transmission due to oil deficiency.

there is a separate wire for the running light. 3 wires for the front lights and 2 for the rear lights. out of the 3 in the front, one of them is your running light, you need to connect that one to your running light wire.

I’m having this same issue. My led signals work fine but when I wire in the running lights, my signals don’t work. Did you have this issue with your running lights as well? You only show the signals in this video.

Después que te borrarán los códigos quedo normal ?

In international language: fuck off

用中文说：滚蛋，谁请你来了？

I think this will do the job

I didnt know the existence of this "differential oil" for this front wheel drive c4? :)

Wondering the same!

no there is no window/dip stick you can check it, you will have to do it according to the service manual amount. :)

Not yet, your guess is as good as mine - running out of ideas and will probably take it to a garage in a few days. No one has given any thoughts yet.

@@liyisu i will replace temperature sensor 1611178280 today. But i think that is the wiring issue.

@@micharoman9188 I doubt it, the problem came up suddenly, before I had a chance to change anything...

@@liyisu I gave up. Replaced sensor. Checked wires. Nothing. Maybe it is software bsi problem. I don't have schematic od this car and I'm waking in blindfold.

@@micharoman9188 I was once where you are .... :)