Poze123

Hi KB Good morning to you. I have a further question for you , hope you see this and can let me know. I'm going to finally look at the battery drain this weekend, so need to clarify something regarding the test process. Process: 1) I open bonnet, connect my DVMeter inbetwen the negative battery post and the negative battery earth clamp. 2) Close the doors and put a screwdriver in the catch to trick the car into thinking the front bonnet is closed (so the light also goes out). 3) Lock the car. (?) 4) Wait 20-30mins and hopefully the DVMeter display will go down from around 900mah to around 50mah which i think is seen as normal. I'd expect mine to stay in the middle due to the constant 3.3V on the horn and a very quiet hum in the engine bay. 5) Question ---- I need to now Pull out 1 fuse at a time and see the current change on the DVM. Am i meant to lock myself inside the car and press the lock Button twice on the key gfob, then wait 20mins, so the interior alarm sensor dosent go off when i move? Or should i connect up the DVM and just sit inside the car and leave it unalarmed with the doors closed? I just want to clarify the "pulling the fuses" out part, so I can look at this over the weekend. Many thanks, Paul

Hey KB Thanks very much for the reply - this is really appreciated and you wrote it in a very easy to understand way - thank you. I'll do these tests mid next week - thank you. Just an an update in the meantime ---- I determined a couple of days ago that the Alarms Siren (black and red unit) was water damaged and completely destroyed. So Ive ordered a new Siren and Tilt Sensor. So this might have also had an effect as its obviously all linked to the alarm. IVe unplugged it and fitted a new battery and CTEK charger, the metal alarm Horn still hums, so once I fit the new Siren/Tilt, I can see if it still Hums and drains at 3v. If it does, i'll do your test and reply with the info. The CTEK in the mean time is an awesome charger and naturally I put in a Bosch 80ah quality battery - so at least it will remain charged and in top condition whilst I sort the current drain fault. Thank you, Paul

Hi all This is my first post, having finally brought another 911. My previous Porsche was a 1985 Targa that I sold around 5 years ago when the Daughter was born (wish I kept that car!). So, I own a 2000 996 Cabroilet and the battery goes flat within approx 5 days. I've read Loads of posts on various forums and have checked voltage and I have cleaned up the earth cables. I loose about 0.1v per day, ie 12.5v Monday, 12.4v Tue, 12.3V Wed and by sat its like 11.85 and generally wont charge. I'm buying a big battery and CTEK next week, but I did notice a problem. With the car running im showing 14.4v approx on my volt meter (on the battery) and 14.5 on the Positive terminal in the engine bay, so a little difference. **So my question: ** I check the voltage on the battery each morning and I noticed that I could hear a Hum coming from the left of the battery, so the Drivers side on my RHD car. Its a very quiet fast clicking/humming noise. The noise is here when the cars unlocked and also when the Alarm is on (I setup a phone to record the noise with the bonnet closed and locked). I removed the plastic cover to check and its the Alarms Horn thats making this little noise. I removed the plug and the noise of course stops, I checked the volage and its 3.3V and this is of course constant. Is this normal? as I'm wondering if this could be one of the items draining my battery. Tonight i will check how many millie amps this draws, but I just wanted to get this post up so maybe a Fellow 996 owner for a 1999-2000 car could open there bonnet and listen to their alarms horn (its noticeable when my road is quiet). :) Many thanks, Paul Bournemouth, UK.