Jump start Prius with L5 Modification?

gasnippr · 06-01-2009, 08:27 PM

My Prius won't start! It looks like I drained the auxiliary battery because I inadvertently left the rear hatch door ajar for two days. I can neither open nor completely shut the rear door now. I've read the manual about jump starting the Prius via the jump starting terminal, but my question is....because I have the Hymotion L5, what should I do other than unplug it from the wall? Would it be better to recharge the auxiliary battery (it shows a charge of 7 volts on the ScanGauge) or jump start the engine? Thanks for your help!!

TheForce · 06-01-2009, 08:36 PM

Use a donor car to start the Prius. Just don't start the donor car. You should be able to turn the Prius. Since your battery is at 7v I would say its completely dead. You might want to replace it ASAP. I doubt you will be able to recharge it.

gasnippr · 06-01-2009, 08:45 PM

I was afraid of that (the bad 12v battery), since I do get error beeps sometimes. But, don't start the "donor" car when jumping?

Bob64 · 06-02-2009, 08:25 PM

Correct. The 12v battery does NOT crank the engine in anyway, so you don't need the current that a running alternator (read: started car) supplements.

A note of warning: Do NOT reverse the polarities when connecting the battery. You CAN totally !$!@%! up your car.

06-01-2009, 08:27 PM	#1
gasnippr Junior Member Join Date: Aug 2005 Posts: 11 My Car: 2005 Prius Model: Package: #6 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Jump start Prius with L5 Modification? My Prius won't start! It looks like I drained the auxiliary battery because I inadvertently left the rear hatch door ajar for two days. I can neither open nor completely shut the rear door now. I've read the manual about jump starting the Prius via the jump starting terminal, but my question is....because I have the Hymotion L5, what should I do other than unplug it from the wall? Would it be better to recharge the auxiliary battery (it shows a charge of 7 volts on the ScanGauge) or jump start the engine? Thanks for your help!!

06-01-2009, 08:36 PM	#2
TheForce I Plug-In My Prius Join Date: May 2005 Location: Wheelersburg, Ohio Posts: 2,735 My Car: 2006 Prius Model: Package: #7 Thanks: 2 Thanked 159 Times in 117 Posts Friends: 22	Re: Jump start Prius with L5 Modification? Use a donor car to start the Prius. Just don't start the donor car. You should be able to turn the Prius. Since your battery is at 7v I would say its completely dead. You might want to replace it ASAP. I doubt you will be able to recharge it.

06-01-2009, 08:45 PM	#3
gasnippr Junior Member Join Date: Aug 2005 Posts: 11 My Car: 2005 Prius Model: Package: #6 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Re: Jump start Prius with L5 Modification? I was afraid of that (the bad 12v battery), since I do get error beeps sometimes. But, don't start the "donor" car when jumping?

06-02-2009, 08:25 PM	#4
Bob64 Sapphire of the Blue Sky Join Date: Apr 2007 Location: Virginia Posts: 1,135 My Car: 2007 Prius Model: N/A Package: #2 Thanks: 3 Thanked 9 Times in 9 Posts Friends: 0	Re: Jump start Prius with L5 Modification? Correct. The 12v battery does NOT crank the engine in anyway, so you don't need the current that a running alternator (read: started car) supplements. A note of warning: Do NOT reverse the polarities when connecting the battery. You CAN totally !$!@%! up your car.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Jump start another car FROM a Prius?	davebrownbass	Gen II Prius Care, Maintenance and Troubleshooting	12	11-18-2009 12:11 AM
Jump starting from portable jump start units	justifyd	Gen II Prius Technical Discussion	29	11-12-2009 07:39 PM
Jump Start Prius w/ cheap batteries?	CCC712	Knowledge Base Articles Discussion	11	09-18-2008 12:23 PM
Jump Start Prius Via Accessory Outlet?	jyl	Gen II Prius Main Forum	18	01-02-2008 12:28 AM
Prius Wont Start without a Jump	badab1ng	Gen II Prius Care, Maintenance and Troubleshooting	13	07-26-2005 12:52 PM