325 cab won’t start

[smudge]

My 325 has been parked up since last October. Put new battery into it & Car won’t start..has power when ignition is turned but when to turn key again to start all lights go out & stereo goes off..& nothing..no crank whatsoever ..any ideas..all fuses look good..thanks...

[Satan]

Are your 100% sure of the new battery, try jump leads.

[smudge]

Yes..brand new battery
Got the car started by using wire in pins 11&14 in diagnostic port.
Some wire issue somewhere I think ...baffled to be honest

[Satan]

Are all the cables to the battery secure?

[smudge]

Are all the cables to the battery secure?

I presume so ..otherwise I’d have no power at all ...no ??

[Satan]

Brian is the best person to advise but I'd check the battery connections, alternator connections and the earth strap for corrosion. If it started by bridging 11 and 14 in the socket then work your way backwards

http://www.e30zone.net/e30zonewiki/inde ... ostic_Plug

where was your car parked as if in a barn or somewhere rural then check to see if the mice haven't been at your car.

[aimlessrock]

check your getting power to the starter motor- can you hear a click when you turn the key?

[smudge]

Ok ,ill try that later today..thanks Satan

[aimlessrock]

Brian is the best person to advise but I'd check the battery connections, alternator connections and the earth strap for corrosion. If it started by bridging 11 and 14 in the socket then work your way backwards

http://www.e30zone.net/e30zonewiki/inde ... ostic_Plug

where was your car parked as if in a barn or somewhere rural then check to see if the mice haven't been at your car.

i looked at a car some years ago in a barn/outbuilding and spotted rat/mouse turds in the bay..i walked away.,

[smudge]

No vermin in the car !!!!!

[Satan]

Brian is the best person to advise but I'd check the battery connections, alternator connections and the earth strap for corrosion. If it started by bridging 11 and 14 in the socket then work your way backwards

http://www.e30zone.net/e30zonewiki/inde ... ostic_Plug

where was your car parked as if in a barn or somewhere rural then check to see if the mice haven't been at your car.

i looked at a car some years ago in a barn/outbuilding and spotted rat/mouse turds in the bay..i walked away.,

That was the rare M3 up for sale at £3k as the owner didn't know what it was and after a £15k restoration was sold for £89950 at auction, wasn't it?

[aimlessrock]

...the rat turds were in keeping with the rest of the car sadly.

[Speedtouch]

Sounds like your starter motor may have become jammed/seized. Try putting the car into a low gear (2nd is usually best) and rock the car back and forth to try and free it off.

Failing that, whack the starter with a mallet.

[smudge]

Sounds like your starter motor may have become jammed/seized. Try putting the car into a low gear (2nd is usually best) and rock the car back and forth to try and free it off.

Failing that, whack the starter with a mallet.

Starter motor is fine..i can start the car from diagnostic port with wire pins 11&14 & she starts straight away....

[paultv]

Fuse 17, 18, 19 and 20 are fed through the un loader relays ( K5 and K7 ) which reduce power consumption during cranking - leaving all the power from the battery to start the car - so your radio going off is pretty normal, unless wired not to do so, electric windows are disabled too.

If you can start with the diagnostic connector, you need to check pin 30 on the ignition switch for power ( main feed to switch which is un fused direct from battery positive) then check pin 50 black yellow cable for power when key is in start position - then chase the black yellow cable as it passes through C200 and C101 as well as a splice where it splits off to the starter and the diagnostic plug.

Paul

[smudge]

Thanks a mill Paul..I’ll do as you say ...thanks

[smudge]

All good now ..found the culprit..bad relay K5 !!!!
Thanks too all for advice.

[Satan]

All good now ..found the culprit..bad relay K5 !!!!
Thanks too all for advice.

Cool, easy fix.