Automatic trunk lid retrofit BMW F10 Bj.2011 by laser21 bimmerfest.com lukasko@gmail.com This is a short guide to help you retrofit the option SA316 - automatic trunk lid mechanism into your F10. That refers to a motor opening and closing of the lid. The powered version opens and closes the lid slowly with a motor, without option SA316 the lid springs up without motor assistance and has to be closed manually. Parts details You can find details of parts on these two sites http://www.realoem.com/bmw/ http://www.etk.cc/ Parts needed (5 series F10) There are five main parts needed under the rear bumper. Part numbers can vary by model. Use the resources above to check the exact part numbers. The part numbers also change over time. You will also need different diameter cables with preferably different colors. (1m 2mm 2 red; 1m 2mm 2 brown; 5m 1,25mm 2 yellow; 10m 0,85mm 2 black, 4m 0,85mm 2 orange, 4m 0,85mm 2 green) Part number Part Cost new in Euros 61357365902 or 7317512 HKFM MODULE 160 51247273752 Trunk servo lock drive 110 51247269543 Trunk lock upper module 110 51247207009 spindle drive left 200 51247207010 spindle drive right 200 61357230179 HKFM Module holder 8,08 61319275121 trunklid inner switch 26,45 Other parts and their quantity (with some excess, so that you can mess up ) 61139149190 6 pin connector 5 61136931912 10 pin connector 3,3 3x 61130005197 contact pin with cable 1,73 8x 61131393724 contact pin small 0,3 8x 61138377162 contact pin large 0,5 The pictures below show the parts. 3x 61130007437 leaf spring contact small 1,86 2x 61130007440 leaf spring contact large 2,5 3x 61131387144 contact for ground 0,2 51717205169 support left cca 5 51717205170 support right cca 5 HKFM
First, start to make your cable-tree which is shown in the above picture connected into the HKFM s A43*1B connector. It s the 61136931912 10 pin connector. PIN Cable color Where to Length Diamet 1 Red/blue Rear Fuse Box F183(40A) in Z23B 30cm 2mm 2 2 Brown Ground in Z108B 50cm 2mm 2 3 Red/yellow Rear Fuse Box F153(5A) in Z26B 30cm1,25mm 2 4 brown Ground 50cm 2mm 2 5 CAN_H 4m 0,85mm 2 6 CAN_L 4m 0,85mm 2 7 Free 8 Free 9 Free 10 free When you prepare this connector before you start, you save yourself time during the disassembly. Now onto the disassembly.
Get some good plastic pry tools, you will need them a lot. After removing all the plugs, carefully remove the whole carpet and the bumper cover which goes off pretty hard. Unplug the pole of the battery and start to remove the old springs by pure force. Be careful, when you remove them, the lid can fall on your head, so secure it in the open position.
Its recommended to put in 51717205169 and 170 as reinforcement not shown in pictures. The old spring uses a different fixture point for their joint, so dont worry, the new spring will fit just fine. Put a flat screwdriver under the metal clip on the end of the new springs it makes it easier to clip them onto the joints.
Here you can see the HKFM module in its housing and the fusebox released you need access to the back of the fusebox. to make 3 connections 2 coming from the HKFM (fuse 183 and 153) and 1 which will supply the soft close mechanism in the lid. Fuse 183 should be empty, 153 should be occupied, so just make a cable-cable connection, dont try to pull out the pin (its too damn hard ). Prepare a 4m long 1,25mm 2 diameter wire which you have to connect to the fuse 155 in the Z26B block in the fusebox. After you have all three wires connected, you can put the fusebox back in place. Connect the cables coming from both springs into the HKFM. Attach the 2 ground cables coming from the HKFM into Z108B picture shows just one. Now onto the lid itself. Pry all out, push on the sides where the arrows are, remove gently, dont forget to disconnect the small light
Mount the soft close mechanism, guiding the bowden like in the picture, also guide the wire coming from the soft close to the lock. Mount it with the help of the rubber plugs. Now attach the bowden and the cable to the lock, and fix it into its position with the big torx screws.
The old lock has a 4 pin connector, but you need a 6 pin connector for the new one. Follow the scheme to create the new connector using 61139149190 6 pin connector.
Pull the cable which you connected to the fuse 155 together with a long (10m, 0,85mm 2 ) wire through the tube with help of a hard cable. Connect the Fuse wire to PIN 1 and the thinner long cable to PIN 6. Now we have to take care of the switch which activates the automatic trunk. We slightly have to alter its connector as well. Unused PIN 2 with a new wire (around 20cm long) Attach the new wire to a grey-yellow wire found in this bundle
Ok, so the trunk is wired, we now need to connect the last 3 wires which let the car communicate with the trunk the CAN bus wires coming from the HKFM and the long cable coming from the lock mechanism PIN 6. ISTA says the following find the CAN cables in X1551V. I havent found them there. They should be 2 twisted wires, easy to find. So I found them on the other side in the trunk connecting into the Camera module. I followed them from the rear drivers side door into the trunk.
they look like this Make the connections, either by splitting the cables, or just remove the isolation and attach it to their side. Now comes the funny part Lead the only cable left to the front around the passenger side into the junction box behind the glove box. The pictures come from a right side drive car, nonetheless, they are the same in the left side drive car. You DO NOT have to remove the plastic entrance step covers. Just push the cable between the carpet and the covers, pry them up a little bit to easy the cable underneath them. When you have the cable at the front passenger footwell area start to remove the glovebox.
Gently pry out the wood trim with the middle vents to acces the torx screws of the glovebox.
There are some hidden screws, you should not forget. If you have a DVD changer, you have to remove it first. It has 5 torx screws holding it to the glovebox and one cable that unplugs on the back. Be careful with the USB port! Also there is a connector on the middle side of the glovebox which you have to disconnect. After that you either fully remove the glovebox or just let it hang on the USB cable.
You will see the junction box and the big blue connector. The black connector slides out from the side of the blue housing. After that, find the PIN 13 and plug in the cable. Now you can try to assemble everything back The trunk should work after you attach the battery, but it might still have some issues that need to be taken care of by coding and initializing by ISTA. Please post any suggestions to this guide to my email. Also, when it helped you, let me know! Paypal lukasko@gmail.com if you would like to give out a beer for me