New owner! Big problems.....

[Badsmerf]

Can you explain how to do that? Is it normal for the battery to die that quickly? Could a stink battery throw these alarms? The truck did go into limp mode, so I'll guessing something is up.

[740iS]

BMW's are notorious for being very picky when it comes to electrical power. I can't say for sure that a bad battery caused those exact faults, but it isn't out of the realm of possibility. Electrical gremlins do all kinds of strange things to modern BMW's. It's been documented across multiple model forums since as early as the E31 and E36 onward.

I would clear the codes and replace the battery if it were me and see if anything returns.

[Badsmerf]

Wouldn't the engine running that low cause a bunch of fuel to be burned and hydrocarbons into the exhaust? I didn't have ista set up when I went into limp mode unfortunately.

That is the right part right? Can someone also explain how to delete these codes individually?

[Thecastle]

Originally Posted by Badsmerf

Wouldn't the engine running that low cause a bunch of fuel to be burned and hydrocarbons into the exhaust? I didn't have ista set up when I went into limp mode unfortunately.

That is the right part right? Can someone also explain how to delete these codes individually?

So injecting fuel into the exhaust is done on purpose in these engines. The cars do post injection events (inject fuel when exhaust valves are open) to send unburned fuel into the exhaust where its is burned by the Diesel Oxidation Catalyst (DOC). The point of the unburned fuel in the exhaust is so combustion takes place in the exhaust stream raising exhaust gas temperatures high enough to burn the soot captured in the DPF. So by design these cars are intended to operate with unburned fuel in the exhaust as part of their normal operating process.

The DOC and DPF ensure that minimal residual fuel and soot are left in the exhaust by the time the exhaust stream reaches the SCR. The SCR doesn't have an issue with unburned fuel per say its bigger problem is having its passages clogged by soot, which is why its located post DPF. Also it can't handle sulphur either.

BTW if the DOC wasn't working on your car you would have bad diesel stink exhaust fumes, like making your eyes water bad. So all of this was a long way to say, I don't know why your SCR failed, but low engine temps don't kill them as far as I've seen. They kill DPFs (don't get hot enough to regen), glow plugs and fuel economy (engine doesn't leave warm up mode). My car has had its SCR injector, Catalyst, and DEF tank all replaced at separate times and has not had the thermostat fail. SCR failures are not uncommon on BMW diesels.

[Badsmerf]

Battery seems to have been replaced last year. Bosch 49-850b. Looks like it has 120 amps. How do I made sure the proper coding was done?

[seattle]

Originally Posted by Badsmerf

Battery seems to have been replaced last year. Bosch 49-850b. Looks like it has 120 amps. How do I made sure the proper coding was done?

Originally Posted by Badsmerf

Can someone also explain how to delete these codes individually?

Did you get Rheingold setup and working?

From there, you can:
-Reset injector adaptations. A must after replacing.
-Register battery.
-Delete codes from individual ECU(s)

[AlpineD]

Did you have a download link for rgold? That one could pm me

[daytonatrbo]

Originally Posted by seattle

Did you get Rheingold setup and working?

From there, you can:
-Reset injector adaptations. A must after replacing.
-Register battery.
-Delete codes from individual ECU(s)

Is Rheingold that much better than INPA for the e70?

[seattle]

Originally Posted by daytonatrbo

Is Rheingold that much better than INPA for the e70?

Don't have experience with INPA. Can't tell.

[Badsmerf]

Originally Posted by seattle

Did you get Rheingold setup and working?

From there, you can:
-Reset injector adaptations. A must after replacing.
-Register battery.
-Delete codes from individual ECU(s)

Yes it is set-up and working correctly as far as I can tell. I couldn't figure out how to manually enter any values for the injectors, I just went through the reset process and then it said proceed to test plan or something like that. Either way, runs great.... except everything didn't sit right because now I have an exhaust leak and a little fuel from one of the connections. I'm traveling for work so it is more a pain than anything. My mpg is up to about 27.5 for the average now.