Hope someone out there has some pointers for me. My 2010 Mini Cooper s Automatic broke down at work. Drove in fine then just wouldn’t start at the end of the day. It had a code P15E8 so I changed out the temp sensor. Still wouldn’t fire. I went back to the basics. Air- check Spark- check Fuel- nada. When spraying starting fluid I could get it to start to fire and run but definitely not getting fuel. I ordered a new in tank fuel pump (high pressure pump was changed last year). But today for some reason my drivers window was cracked open. Now I have a U0101 & P0503 code that wasn’t there before. It has been parked for about 3 weeks now. Let me know if you have any ideas on where to go from here.

Thanks in advance
John

 

check if there is water intrusion behind the passenger or driver kick panels. The sunroofs (if you have one) tend to leak and cause some electrical issues.

 

Ok will do when I get home. If it is that is it just a repair drains and dry out thing or am I looking at replacement or parts?

 

you could try to dry it off but there is a sign of water damage like greenish residue then you might have to replace it/them. They are plug and play if you buy used with matching part numbers BUT coding will always be needed to align the parts with the car.

 

So worked on it today. No evidence of moisture (greenish look on wiring). Installed the in tank fuel pump. And still no fuel to the HPFP. So I did a bench test and the pump turns on with 12v applied. Only code that will pop up is P15E8 which I already changed out the temp sensor and air freed the system. Is it sounding like the fuel pump relay is bad??? Or could there be something else keeping it from sending power to the pump?

 

Could you try spraying quick start/ starter fluid into the elbow going to the throttle body? If it starts, then the fuse box is most likely the issue.

 

Yep it will start with starter fluid.

I started searching and found this one on eBay any chance you can let me know if it will be compatible?

Current fuse box in car

Found one on eBay only one set of numbers don’t match will it be compatible without programming???

 

yes, this should be fine...most important number is the 3455527. the other maybe a production date. generally speaking, if the donor car has similar options specially with transmission type, you should be fine. if yours is a manual and the donor is auto, you'd need to code it. coding takes about less than 5 minutes.

 

Gotcha. I was trying to find a guide on what the code means but couldn’t find anything. I guess I will buy it and hope for the best

 

you'll be fine

 

One of them I found says it came from a manual. I however have a automatic. What kind of issues would be present if anyone knows. My nearest mini is 1.5 hours away and with the Covid stuff right now everything is on its head.

 

The only issue I can think of is that would be looking for a clutch signal to start, if not, it should operate fine. oh, if you didn't buy it yet, check car-part.com. you might find an exact match even with an auto transmission.

 

thanks I will try that

edit: dude your awesome. Never saw that site before. Saved me $100 and you can see exactally what it’s coming from.

 

I got my fuse box in the mail took be a bit to install. Fired up fine. Defiantly was something from there causing the issue. Here are pictures of the bad one I can see no evidence of water damage or burnout. Hope this can help someone in the future. Also my P15E8 cleared after I started it up.

 

Awesome brother...happy to hear that