Electronics > Repair
Need help diagnosing a no crank no start issue on a 2000 323 E46 BMW
poot36:
We have opened up the EWS and all the solder joints look good and the caps are not visibly leaking or bulging. The EWS did work after putting it in the freezer but also continued to work when we warmed it up with a heater. We are leaving it overnight to see if it fails again. @fzabkar This part did cause us confusion as well but there are two rolling codes, one between the key and the EWS and another between the EWS and the DME with the ISN. As far as I know if the code between the EWS and the DME gets messed up the engine will crank but not start due to the DME not enabling the spark and fuel. I don't think this is the issue right now.
poot36:
We had the EWS fail to start the car after about 2 days of starting it stopping it and driving it around the block just in case it broke down again. So sticking it in the freezer did make it a bit better. We decided to re-solder all the through hole components on the PCB and so far it has lasted for more then 2 days. Hopefully it is just a micro fracture in the solder that we did not see.
poot36:
Well it has been functioning correctly after re-soldering all the through hole components and connectors on the PCB. I guess it was a micro fracture in a solder joint after all.
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