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| 968 battery drain problem https://forums.tipec.net/viewtopic.php?f=25&t=7160 |
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| Author: | Richy_S [ Tue Nov 17, 2009 8:46 pm ] |
| Post subject: | 968 battery drain problem |
Hi Guys Trying to diagnose a battery drain problem on my 968 - i assume the following will be the same on an S2 etc Measuring the current with every thing swiched off I am finding that it is going up and down with a clicking noise from within the car. Tried disconnecting all fuses but it is still there, then tried disconnecting the alarm - again still there. The clicking seems to be coming from the near side rear quarter - I am guessing that as it is something that is powered with all the fuses removed it might be the immobiliser. Its a factory fitted unit - can anyone confirm its location is behind the ns rear quarter I.e alongside the rear seats before I pull it all apart? Rich |
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| Author: | hotblack944 [ Tue Nov 17, 2009 9:15 pm ] |
| Post subject: | Re: 968 battery drain problem |
Hi Rich, I always thought the clicking from the near side rear in my S2 was from the ultrasonic sensor on the factory alarm - it clicks when you move about and stops when you stay still. If yours is clicking all the time, maybe your ultrasonics are goosed? |
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| Author: | Richy_S [ Tue Nov 17, 2009 9:18 pm ] |
| Post subject: | Re: 968 battery drain problem |
Theres a aseparate control box for them and I have disconnected them. Now beginning to think the immobiliser is under the passenger seat. Rich |
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| Author: | zola1 [ Tue Nov 17, 2009 9:47 pm ] |
| Post subject: | Re: 968 battery drain problem |
What amount of drain have you got? are we talking mA's or Amps Derrick |
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| Author: | Richy_S [ Tue Nov 17, 2009 9:54 pm ] |
| Post subject: | Re: 968 battery drain problem |
zola1 wrote: What amount of drain have you got? are we talking mA's or Amps Derrick Approx 300mA reducing to 150mA when hearing the click - I guess the difference is the coil of a relay. Started of with 500mA+ - old favourite, glovebox light. Rich |
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| Author: | zola1 [ Wed Nov 18, 2009 9:25 pm ] |
| Post subject: | Re: 968 battery drain problem |
yes i agree, 80 ohm relay windings = approx 100mA draw,what is the OEM immobiliser on a 968 q1.What do you use to disarm the immo ? is it a manual type receptacle ? or is it passive i.e it has an Ariel loop around the ign barrel so the user has a transponder (either in the key or a dongle hanging form the key. i don't have any 968 circuits to hand just coming at it trying to get my head around it...,as normally any immo would not have such a high quiescent as the only circuit to stay "high" would be the LED telltale 10-20mA max. have you located the immo ecu ..you mentioned under the pass seat ? |
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| Author: | ExAudiSi [ Wed Nov 18, 2009 9:37 pm ] |
| Post subject: | Re: 968 battery drain problem |
Usually the factory fitted stereo amplifiers reside under the front seats, one on each side. |
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| Author: | Richy_S [ Wed Nov 18, 2009 10:13 pm ] |
| Post subject: | Re: 968 battery drain problem |
Yep found the immobiliser under the passenger seat. Its a steel box that has no way of opening up simply. Sitting in the car with all off I hear the occasional click from a relay within the immobiliser - when this clicks the current drain from the battery decreases. There is a local gnd contact which I need to check but other than that I think it will be a call to Hamilton and Palmer. Rich |
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| Author: | zola1 [ Mon Nov 23, 2009 12:17 pm ] |
| Post subject: | Re: 968 battery drain problem |
Richy_S wrote: Yep found the immobiliser under the passenger seat. Its a steel box that has no way of opening up simply. Sitting in the car with all off I hear the occasional click from a relay within the immobiliser - when this clicks the current drain from the battery decreases. There is a local gnd contact which I need to check but other than that I think it will be a call to Hamilton and Palmer. Rich Did you have a luck getting info on the immo from them ?........are they all black wires for the unit etc ? |
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