hello everyone, i just bought a 2008 model e61. rear trunk power does not work. When I press the on and off button, nothing happens. I have to open it manually. what should i check?
Also, when I put the car in reverse, the left rear parking sensor constantly beeps and the left rear sensor in idrive is at the red dot, as if there is something in front of it. What do you think is the problem?
And should I change the transmission oil? I don't know if it has changed before. my car is at 215000 km

Thanks in advance for the answers.

 

I would first want to see if the liftgate pump is getting power. When I bought my E61 a previous owner had just removed the pump and installed standard struts to make it a manual liftgate. I bought a used pump and hydraulic arm to restore the feature. There is a control module in the rear that has the relay providing power to the pump. I would see try seeing if the hydraulic pump is receiving power when you press the button. If not, I would tend to think control module or a fuse are the culprits. If you are getting power, then I would think the pump is the problem. You can always scan for codes as well with INPA or ISTA.

Could be a bad parking sensor. One time someone pushed on my parking sensor and it went in about half a centimeter and that was enough to make it think I had backed into something. Could remove the bumper and swap the sensor with another one and see if the problem moves with it. If so, I think you have your answer.

I'm guessing yours is an automatic? I've never owned an automatic before but I would be tempted to do that. I think Johnny from German Motor Works (Car Ninja on YouTube) said that the ZF course he went to said to not change the fluid if it's really old as you could cause problems. If it were me I would do it anyway as I don't like old fluids. If it's a manual transmission I would definitely do it. When I buy a car I change all fluids just so I know they are done (transmission, differentials, transfer case, oil, coolant, power steering, etc.)

 

If :nothing" means no noise at all, then you need to check all the electrical bits (including the switch down by the hood release lever). If you can hear the pump run, but the tailgate doesn't move, the most likely problem is that the hydraulic fluid is low. The BMW procedure for fixing that involves LOTS of disassembly, so you can remove the entire pump unit and access the fill port they put on the BOTTOM of the reservoir.

If you're lazy like me, you can do this:

If there's no sign that anything has been done to the transmission, you should research and order the Mechatronics kit for the transmission. That will include the pan/filter as well as the fluid and gaskets, seals and "tubes" to replace the rubber bits that routinely wear out and reduce the transmission's performance. There are a lot of links to DIYs and videos for that process, and it's probably the most important maintenance you can do to keep your car on the road, other than oil changes and swapping out the water pump every 100000 miles.

 

Thank you very much for your answers. I was available today and looked at the hydraulic oil pump. what can I see, there is no hydraulic pump . I need to find a new hydraulic pump and give it a try.
I don't have the tools and space to remove the bumper for the parking sensor. I guess I have to show it to the mechanic.

 

[QUOTE=habbyguy] Eğer tamamen olmasa da, tüm elektrik parçalarını kontrol etmek gerekir (kaput açma kolundaki anahtar dahil). .Bce tüm pompa ünitelerini yeniden kullanılabilir ve rezervuarın ALT

içine koymakları doldurmak portuna doldurmak gibisin, bunu yapmaksin:

Şanzımana herhangi bir şey yapılacakna mandıra bir işaret yoksa, turistik için Mekatronik kit araştırmalı ve sipariş edilir. Buna tava/filtrenin yanı sıra, aşınan ve silindirin eğitiminden kullanılmış olanlar için eski parçalar, contalar için sıvı ve contalar ve "tüpüpler" de dahil. Kendin Yap'a bağlantı var ve bu, onun 100.000 kilometrelik yağını ve su pompasını dışında arabanızı tutmak için en önemli bakımıdır.

Cevaplarınız için çok teşekkür ederim. Bugün müsaittim ve hidrolik yağ pompasına baktım. ne göreyim, hidrolik pompa yok . Yeni bir hidrolik pompa bulup denemeliyim.
Park sensörü için tamponu sökecek alet ve alanım yok. Sanırım tamirciye göstermem gerekiyor
.

 

Thank you for your reply. There was no hydraulic pump in the trunk. I don't know what they did before. if it's parking sensor, i don't have a place and tools to do it myself. I will have to take it to a mechanic
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