ZT-T keeps draining it's battery very quickly

Rick-sta · 18th July 2018, 09:43

Hi all,

The ZT-T I've bought keeps draining it's battery very quickly, literally within 48 hours. The previous owner did say if left sat for a couple days it drains it's battery. I removed the satnav disc from the satnav drive in case it was that causing the drain but didn't make a difference.

This morning the alarm went off due to the battery being completely dead and the headlamp washer pump was on constant. It has the battery back up alarm system.

It has a new battery fitted, have tried 2 batteries in case it was a faulty battery causing it.

Any ideas? how can I go about finding what is causing this drain?

Cheers,
Rick

daveycooper · 18th July 2018, 10:14

I had exact same issue.

No obvious drain on system.

But noticed battery terminal clamps were slipping on battery terminals, so rubbed down with wet and dry then reconnected the battery. No issue since. I know this doesnt sound like it would sort a battery drop issue but it worked for me so worth checking

75c · 18th July 2018, 10:25

https://www.wikihow.com/Find-a-Parasitic-Battery-Drain

I followed that to find mine. In my case it was my alternator that was the parasite.

dave lincs · 18th July 2018, 10:31

does the car have a sunroof?

greendriver · 18th July 2018, 10:36

I had the same issue. I had loose battery terminals too! Plus, the cd changer kept changing the cd. Once I discon the batt for 10 mins & reconnected properly, everything was ok.

Avulon · 18th July 2018, 12:54

It's not enough to remove the disc from the satnav drive. Make sure it shuts down properly.

Boot open so you can see satnav drive light. turn off ignition. Do not open or close any doors boot or bonnet or touch anything electrical on the car while waiting! (that will restart the countdown as it wakes up the whole ICE system) if after 5 minutes the light is still on then you have your culprit: unplug it. A good one will usually shut down after 2 or 3 minutes.

wraymond · 18th July 2018, 13:00

This happened to mine last February. After much fiddling, searching, and incidentally incorrect diagnosis by no less than two local garages, (which I luckily ignored as obviously and hopelessly wrong) another member Borg Warner, thanks, recommended his garage to me.

They diagnosed it as a faulty switch panel (fog light/dimmer controls/lighting switch on the panel to the right of the steering wheel and about halfway down under the small cubby). Expensive but, fear not, if it is that fault, Marina Brian on here could have done it for a fraction! Thanks Brian, if there is a ‘next time’ you’ll be the first port of call!

Bogbrush82 · 18th July 2018, 13:16

Alternator regulator? I had this go on my 25 and caused a similar fault.

rrobson · 18th July 2018, 15:21

have you done any investigations with a multi-meter? should isolate the area rather that guessing

Mickyboy · 18th July 2018, 17:12

Check the one way diodes at the alternator, had a car a few months back that was displaying a parasitic drain due to this, it’s easier for you to watch the YouTube clip than me type out a long in-depth explanation on a mobile phone lol

https://youtu.be/dhf6IdBbE3Y

Hope that helps mate
Mick

18th July 2018, 09:43	#1
Rick-sta This is my second home MG ZT 2.0 CDTI+ in Typhoon, MG TF 135 in Typhoon & Rover 75 Connoisseur CDTI SE in Pearl Black Join Date: Oct 2012 Location: Norfolk Posts: 7,534 Thanks: 2,718 Thanked 2,827 Times in 1,462 Posts	ZT-T keeps draining it's battery very quickly Hi all, The ZT-T I've bought keeps draining it's battery very quickly, literally within 48 hours. The previous owner did say if left sat for a couple days it drains it's battery. I removed the satnav disc from the satnav drive in case it was that causing the drain but didn't make a difference. This morning the alarm went off due to the battery being completely dead and the headlamp washer pump was on constant. It has the battery back up alarm system. It has a new battery fitted, have tried 2 batteries in case it was a faulty battery causing it. Any ideas? how can I go about finding what is causing this drain? Cheers, Rick __________________ How to retrofit Cruise Control on a diesel with no OEM wiring in place: Link How to retrofit heated electric memory seats with no OEM wiring in place: Link How to operate FBH and ATC via text Link How to restore cloudy projector headlights Link

18th July 2018, 10:36	#5
greendriver This is my second home MG ZTT 180 in Poseidon Join Date: Feb 2011 Location: Croydon Posts: 3,745 Thanks: 44 Thanked 86 Times in 75 Posts	I had the same issue. I had loose battery terminals too! Plus, the cd changer kept changing the cd. Once I discon the batt for 10 mins & reconnected properly, everything was ok. __________________ *None of my troubles are Rover*

18th July 2018, 12:54	#6
Avulon This is my second home 1.8t Tourer Join Date: Oct 2011 Location: Tanelorn Posts: 4,830 Thanks: 956 Thanked 1,148 Times in 916 Posts	It's not enough to remove the disc from the satnav drive. Make sure it shuts down properly. Boot open so you can see satnav drive light. turn off ignition. Do not open or close any doors boot or bonnet or touch anything electrical on the car while waiting! (that will restart the countdown as it wakes up the whole ICE system) if after 5 minutes the light is still on then you have your culprit: unplug it. A good one will usually shut down after 2 or 3 minutes. __________________ Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk) Where?: https://en.wikipedia.org/wiki/Tanelorn Mods/Retrofits: PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors To do: puddle lights; 2 Din cd/nav to fit; boot release button

18th July 2018, 13:00	#7
wraymond This is my second home 75 Auto 2.5 SE Join Date: Feb 2010 Location: Westcliff on Sea Posts: 5,195 Thanks: 423 Thanked 1,680 Times in 1,014 Posts	This happened to mine last February. After much fiddling, searching, and incidentally incorrect diagnosis by no less than two local garages, (which I luckily ignored as obviously and hopelessly wrong) another member Borg Warner, thanks, recommended his garage to me. They diagnosed it as a faulty switch panel (fog light/dimmer controls/lighting switch on the panel to the right of the steering wheel and about halfway down under the small cubby). Expensive but, fear not, if it is that fault, Marina Brian on here could have done it for a fraction! Thanks Brian, if there is a ‘next time’ you’ll be the first port of call! __________________ member no. 235

18th July 2018, 13:16	#8
Bogbrush82 I really should get out more....... BMW X3 2.0D Join Date: May 2017 Location: Tipton Posts: 2,383 Thanks: 51 Thanked 765 Times in 421 Posts	Alternator regulator? I had this go on my 25 and caused a similar fault. __________________ Current car: BMW x3 2.0d (The one with the M47 engine!) Rolled off the line on December 14th, 2004.

18th July 2018, 10:14	#2
daveycooper Avid contributor 75 Saloon Join Date: Apr 2015 Location: newcastle Posts: 150 Thanks: 23 Thanked 23 Times in 16 Posts	I had exact same issue. No obvious drain on system. But noticed battery terminal clamps were slipping on battery terminals, so rubbed down with wet and dry then reconnected the battery. No issue since. I know this doesnt sound like it would sort a battery drop issue but it worked for me so worth checking

18th July 2018, 10:25	#3
75c Gets stuck in Rover 75 Saloon Join Date: Feb 2018 Location: Belfast Posts: 601 Thanks: 150 Thanked 294 Times in 190 Posts	https://www.wikihow.com/Find-a-Parasitic-Battery-Drain I followed that to find mine. In my case it was my alternator that was the parasite.

18th July 2018, 10:31	#4
dave lincs Posted a thing or two Rover 75 Saloon Join Date: Mar 2014 Location: Louth Posts: 1,420 Thanks: 380 Thanked 986 Times in 476 Posts	does the car have a sunroof?

18th July 2018, 15:21	#9
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,644 Thanks: 17 Thanked 295 Times in 218 Posts	have you done any investigations with a multi-meter? should isolate the area rather that guessing __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available

18th July 2018, 17:12	#10
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	Check the one way diodes at the alternator, had a car a few months back that was displaying a parasitic drain due to this, it’s easier for you to watch the YouTube clip than me type out a long in-depth explanation on a mobile phone lol https://youtu.be/dhf6IdBbE3Y Hope that helps mate Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]