The car sat for a couple of months now there is no power getting to the car?

Hi Joe,

Thanks for your reply. In answer to your query no the battery in fitted in front engine compartment passenger side next to the fuse box/ Battery as it's a right hand drive saloon BMW.
I've studied the image you sent me "B+Jump starter Junction Box" but so far I am unable to find it? Am not sure if there is one. I've checked the Black ground wire and it looks okay? I took the battery out so I don't know if anything electrical is working. So you think it's a grounding problem?

Hi Joe,

In answer to your reply/query "You need to know know if anything electrical is functional". The answer would be "nothing". There is no power getting from the battery to the car. I've checked the black ground wire and everything looks good. Also answer to question X in picture 1 indicates a different vehicle IE. Convertible, the answer is "no" my car is a 4 door saloon!

PS.I am not very good with electrical diagrams so I couldn't say which is which.

Hi Joe,

In answer to your reply/query "Check a couple of the fuses under the hood to see if there is power there",
basically I can only do a visual inspection as I haven't got a test light handy.
I see from your attached picture that you have highlighted fuses 1 - 20 and 21 - 30. Is there any particular fuses I should be looking at? If I get your drift correctly to do a power test I would need to have connected the battery up and then test them with the test light? For the moment I'll do a visual inspection and let you know if I find any blown fuse.

Hi Joe,

I'm back. I've checked the fuse box and fuses and they all seem to be fine, no blown fuses. I am a bit puzzled though because there's no fuse number 2 connector in my box, so fuses 1 - 6 no connectors no fuses is that normal for my make/model of car?I'll have to get a battery test on-line but it be a few days.

Hi Jacobandnickolas,

I'm back I've checked the fuse box and fuses and the
following fuses where tested using my battery tester light.

*Fuses 11, 12, 13, 15, 16, 17, 18 Tested Dead
*Fuses 20, 14, 19, Tested OK
*Fuses 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 Tested Dead
*Fuses 31, 32, 33, 34, 35, 36, 37, 38, 39 tested OK
*Fuses 42, 43, 44, 45, 46 Tested Dead

All the dead fuses where not blown fuses!I hope this helps.

Hi, Jacob & Nickolas

In answer to your reply/query "Disconnect the battery, remove the fuse box and inspect the Underside where the positive red wire connects to it ", I see that you have a theory that you think something got into the connections under the fuse box and that's the direction we need to check. You also say that all the cars fuses are powered from that point. Also the ignition switch is also powered from it. You think there is an open in that red wire at some point.I 'm not to sure what you mean "Open", do you mean "Brake"in the wire that might be causing an open circuit?. So you want me to check the underside of the Fuse box and do a visual inspection? I'm okay with a visual inspection, but I am worried nervous about damaging something. If you can assure me everything would be okay I am happy to try. The only problem I have is"How do you remove the Fuse Box" what tools do you need etc.

Thanks

Hi Joe,

Thanks for your answer to my reply/query "disconnect the battery, remove the fuse box and inspect the underside where the positive red wire connects to it ", So you want me to check for power in the box at a different point. See pic below. Confirm that has 12v. I've looked at your picture(3) with the arrow pointing at the Red input wire which feeds power into the fuse box, yes there is such a red wire on my fuse box next to the relays. So do you want me to check this wire with my battery tester to confirm that it has 12v. Going to it. So I can reconnect the battery to do this test?

Yes, I understand, not being face to face makes it hard for you to guarantee anything. Thanks for your patience
I'm not an expert on car electrics, although I can do basic stuff like changing light bulbs, fuses, repairing wires, oil change, service the car etc.

Thanks

Hi Joe,

Thanks for your answer to my reply/query. I'll get back to next week when I've done the test and let you know.

Thanks

Hi Joe,

In answer to your reply/query I've done the test with my battery tester and I can confirm that it has 12v. Going to it the wire looks good. I've also re-checked the fuses and gone over them with contact cleaner.I've also discovered 3 dead 5-pin ECM Modules relays R1, R2, R3, I tested them with my relay tester but they all failed the test. I had a feeling they had failed.I am keeping my fingers crossed.I'll have to order replacements.

Thanks

Hi Joe,

I'm back. Great news my car bust back into life this morning after replacing the 3 dead 5-pin ECM Modules relays! When I reconnected the battery no clicking/resetting sound at first, so I opened up the boot and fiddled with the wiring which connects the central boot lock and all of a sudden all of the central door locks opened. I then tried the lock on the passenger door with my car key and it locked them down. So at least I can open/close the doors on the passenger side. I can't open the doors from the boot lock so it looks like some wires are corroded/bent touching some where? Everything else is working great; dash, lights, engine, everything! I think I'll get the auto electrician to have a quick look at it as I don't like messing with wires.I'd like to thank all the 2CarPros mechanics for all you support and help with my car's electrical problem.I wish you yo all the best and keep up the good work. Graham UK.