Question about 1996 BMW Z3 Roadster

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Mysterios drain on battery 1996 BMW Z3 1.9

Local mechanic trying to fix problem that car will not start - found a drain on the battery but can not locate what the problem is. Has checked all lights no luck

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  • loch_ada Dec 13, 2008

    The suggestion that the starter could be the culprit was tried and I beleive has been proven successful. The shop charged the battery, disconnected the starter and left it overnight. Next day reconnected starter and car started. They then left the car overnight with the starter coinnected and could not start it this morning. They are not sure this is the solution so they are going to repace the starter and try the test again.



    Can you expalin what fails in the starter to cause it to drain the battery?

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Look at the dome light switch on the drivers side for corrosion etc. make sure it isnt pulling the circuit down

Posted on Dec 08, 2008

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Something is draining the battery on our 2002 bmw z3.the battery and alternator checks out good,what is draining the battery??


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I have a 96 328i BMW Believe I have problems with my altanater what are the sintums


Call out a local mechanic as without my head in the engine i couldnt tell you anything ,might just be the fan belt broke but ?? from afar i cannot know

Feb 25, 2015 | 1996 BMW 328i

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BMW 2002 X5 Battery Drain


I am having the same problem with my 2002 X5. There is a motor or fan running behind the AC control panel on the dash and if I pull fuse 48 it stops and the battery doesn't drain. Still looking for the cause and solution so that I don't have to keep pulling and installin fuse 48. BMW garage suggested that it was the Final Stage Blower Resistor. I replaced this and no change. I hope someone has an answer that will help us both.

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Having trouble starting my 330i, like it has a dead battery. BMW dealer tells me the battery is low due to a "Steering column fault" the battery is ok, they recomend a new software program be...


Seems highly unlikely. I can imagine a possibility for a drain that might discharge he battery when the car is off, but your description suggests that you have determined that it is not charging rather than draining when turned off. You can rule out a drain in the seat heater by removing the fuse for the seat heater and see if the problem persists.
The software upgrade answer sounds Bogus.
There are a lot of good German car specialty shops out there. Check the Mechanics Files on the CarTalk web page or hook up with your local BMW owner's club, and find a good independent shop.

Jan 27, 2011 | 2006 BMW 545i

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Battery goes dead in my 1996 bmw 328si what could be causing this to happen


Did you have the battery tested? It should hold 13+ volts at any time. Wal- mart will test it for you. If the battery is good, get the car fixed before you kill the battery, car batteries can only go dead so many times before they are shot. If the alternator is not charging, get that thing to the shop too and have it tested, if it is OK, then you have to have something running like a clock, radio, alarm system, something is draining the battery, you have to find it and get her fixed or carry a spare battery. I have heard of fuel pumps running on, and draining the battery, see if you can hear that thing going when the car is off. Check it out. Hope this helps.

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1 Answer

I have BMW 1996 328i I can not start engine can you tell me about my car?


Your question is very general, it could be one of the following:

1- Dead battery
2- Starter problem
3- Starter Relay or the Main relay.
4- A computer module (not sure)

if you hear the starter coming on but the engine won't start then it could be one of the following:

1- Fuel system problem
2- Locked engine (Don't fix it)
3- Timing built problem
4- Other unknown problem, a mechanic has to see it.

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1 Answer

I have a bmw 2001 330ci convertible which had the alternator replaced twice in a month and half.the mechanic is claiming that there is an electrical problem and he cannot figure it out and to go to the bmw...


it seems like something is draining your battery while the car sits overnight. causing the battery to get weaker and weaker putting stress on the alternator making it fail prematurely. the dealership will do a paracidic drain test where they'll find out what is draining your battery while your car sits overnight. it could be a bad module somewhere that's staying on when it shouldn't be.

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1 Answer

Engine sometimes will not start when iy does runs ok


Here's a diagnostic article on why engines fail to start at first sometimes:

For carburetor engines w/ the problem:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_With_Carburetor_Hard_To_Start_Morning_After_Hours.htm

For fuel injection system engines w/ the problem:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hard_To_Start_Morning_After_Hours.htm

You probably ought to get a professional mechanic fix the problem before it gest worst. Call around some local mechanics for free estimates. Heck, I know the following site has a small auto section where they offer great deals, like free estimates from local auto specialists in your area, whom I would think would be able to assist you in diagnosing the problem and having it fixed before it gets worse--right now one ad-link says you could save like 50% through what I read as competitive bidding or something like that--here's the link:

http://plusrecipes.com/PlusRecipes_Free_Estimates_Auto_Repair.htm

Yeah, so call around or use the above link. I hope this is helpful. Good luck!

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2 Answers

1996 BMW 328 IC Convertible Altenator ok but not charging battery


Sounds like the alternator may be missing an excitation current source.
Check the 'IGN' dash indicator lights when you turn ignition switch on prior to starting motor,
if not one of the below may be problem:-
1) check exiter control wire is connected to alternator D+ terminal (low current wire, +V with Ign on),
2) replace dash 'IGN' indicator lamp.

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1 Answer

1996 318 i se battery went flat, replaced it now it wont start, got ignition lights but wont turn over


This is not a sloution but i had a similar problem about 6months ago. I left the lights on which drained the battery, road assistant came to booost start it, there was power but no turn over, not even a clunk of the engine trying ( all electrics are working and lights in the dash are live), tried a new battery same situation,
I took it to BMW independant specialist who put it down to a ECU fault , i was duped into having a new key made as i had no spare as it was believed the immobilizer had locked the car up so to speak, this didnt work , so the mech ordered a new ecu, and had it reprogrammed and it turned over first time, It was bumpy idling at cold start cos i had my original dead battery but after a day it ran like it used to sweet as a nut.
it was expensive 500 quid to put right, but then you may have better luck with your mechanic.

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