[e90 junkie]

Can anyone Please help with what to do or change on code p0687 and also if that's whats causing the car to have a long crank with no start?

[Delta0311]

I believe that has something to do with the ecm, engine control module.

[e90 junkie]

Does it need to be replaced?

[GoRomeo]

Possible causes:
- Weak battery- Low voltage while cranking. Start by testing your battery before anything else.
- Faulty Engine Control Module (ECM) relay
- Blown ECM fuse
- Faulty ECM
- ECM harness is open or shorted
- ECM circuit poor electrical connection

Good luck and keep us posted. Cheers!

[e90 junkie]

I just installed a brand new battery so
Where can I locate the ECM relay and fuse

[GoRomeo]

Did you make sure you replaced it correctly? Or whoever did the job..

[jwzimm]

Am I missing something here? You should be under warranty still.

[PINeely]

Did you register the new battery to the car? Also possibly the eccentric shaft sensor.

[alexg212]

When you install a new battery, it needs to be coded to charge correctly and efficiently.

[e90 junkie]

it hasn't been coded yet and i don't want to bring it to the sdtealership yet.
i want to know how to code it my self

[e90 junkie]

i bought the vehicle as is so i dont think so

[jwzimm]

Originally Posted by e90 junkie

i bought the vehicle as is so i dont think so

How many miles? You are covered under a factory 4 year / 50,000 mile warranty. You are good on the years and if you are under the 50,000 mile limit get in to the dealer and get this fixed for free.