Thread: Won’t start and indicators blinking even with key out

Originally Posted by sierrafery

Use a voltmeter and measure voltage on the battery while cranking, 750CCA is too weak for a Td5 anyway but if the voltage drops below 10.5V while cranking you might need to change the starter motor cos it has an internal issue which disturbs the crank signal and creates too high drain, also find somebody with an oscilloscope to verify the alternator cos it's the only 100% certain way to rule it out as if even only one diode(out of the 8 diode pack) is shot you'll get DC voltage on a voltmeter but the battery might suffer and not be charged well, see this Testing an Alternator With an Oscilloscope | Simply Smarter Circuitry Blog

Had a chance for some more exploration today. After many starts with voltmeter on battery terminals I can say it didn’t drop below 10.5V once. Lowest was about 10.9. Most were in lower to mid 11v.

Have also replaced the inertia switch and cleaned the ground contacts in front of the engine bay fusebox. Not had any recurrence of the hazard lights or non-start since. I’ll track down more ground contacts soon and clean them too.

Originally Posted by acgmarketing

Got home. Shut down. Tried to start again - started momentarily the. Shut itself down and went back to flashing indicators etc per above.

Mods can you move this out of the emergency and SOS section and into the TD5 disco technical discussion section or similar?

I suspect now something to do with ABS and it didn’t bring up errors when driving to avoid causing issues but does stop restarting the car. I did had 3 amigos a few times before we went away a month ago - haven’t checked again on Nanocom for fault list yet. Will do later today.

Anyone seen this before?

Test battery properly, i.e. what voltage remains when starting, need a mate to help, if under 10. something then battery is stuffed even though you get 12. something on multimeter prior to starting. Computer reads the voltage drop and goes nuts flashing all sorts.