Voltage leak 180e

1982-1993 :180E, 190E, 190E 2.3, 190E 2.6, 190D 2.2, 190D 2.5, 190D 2.5 T
Post Reply
alchemie
Dernburg Wagon
Posts: 6
Joined: Sun 31 May, 2015 6:54 pm
Model you own: w201

Voltage leak 180e

Post by alchemie » Sun 31 May, 2015 7:04 pm

I've inherited a 92 180e and have now got a voltage leak somewhere.
I left the car at an auto electrician 2days in a row and they couldn't find the leak :banghead: . I'm have to jump start with a battery pack each time :Doh: .

If the car has run for some time the battery obviously charges up. When I unlock the doors I hear a buzz in the right hand rear of the boot? (this didn't occur before) any ideas? :pray:

:wav: On another note... I'm in the process of acquiring a 190e 6cyclinder for cosmetic parts predominately, I'll update once I have it if anyone maybe interested in spares for a reasonable price.

User avatar
Tony From West Oz
OZBENZ moderator
Posts: 3124
Joined: Mon 20 Jun, 2005 10:04 pm
Model you own: w202
Location: Bedfordale WA

Re: Voltage leak 180e

Post by Tony From West Oz » Sun 31 May, 2015 9:30 pm

The buzz you hear in the boot is the vacuum pump which powers the vacuum actuators of the CL system.
Have you tried disconnecting the battery overnight and re-connecting it in the morning and trying to start the engine? Batteries fail in a number of ways, including slow discharge overnight.
If your battery is in good condition, open the fuse box and using a multimeter on current range, check across each fuse holder with that fuse removed. Any more than 500mA (500mA * 12 hours = 6AH) will contribute to poor starting in the morning. Normally only the radio, security and clock (anything else??) should be drawing power with doors locked and the lights and ignition off.

I hope this helps,
Tony
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

alchemie
Dernburg Wagon
Posts: 6
Joined: Sun 31 May, 2015 6:54 pm
Model you own: w201

Re: Voltage leak 180e

Post by alchemie » Wed 10 Jun, 2015 1:44 pm

Thanks for the help.

I've tested the with a amp meter across the fuses... no luck :error:

It is a battery in the vehicle now. :banghead:

The auto electrician stated that he couldn't find it either and that he believes that their maybe some "hard wired" fueses? which maybe the cause.... any thoughts on that ?


:wave: I now have the 190e 6cyclinder, for cosmetic parts and also if anyone needs something from it, let me know and I'll happily look to see if the part is available and in good nic. I'm happy to pass on any parts for a decent price + postage. I'm in the Blue Mountains NSW. :wave:

User avatar
Tony From West Oz
OZBENZ moderator
Posts: 3124
Joined: Mon 20 Jun, 2005 10:04 pm
Model you own: w202
Location: Bedfordale WA

Re: Voltage leak 180e

Post by Tony From West Oz » Thu 11 Jun, 2015 12:36 am

Usually all electrical loads in the vehicle get battery power from a wire on the starter motor battery connection.
1. If you remove this connection, you should have significantly less than 0.5A current flow when you connect it via an ammeter (multimeter on Amps range).
2. With that wire still disconnected, remove the battery earth terminal, there should be no current drawn when you connect the negative terminal to ground via an ammeter.

This eliminates 1. All loads taken from the normal connection.
and 2. All other loads (including any aftermarket modifications.

I hope this helps,
Tony
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (occasional tourer)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

alchemie
Dernburg Wagon
Posts: 6
Joined: Sun 31 May, 2015 6:54 pm
Model you own: w201

Re: Voltage leak 180e

Post by alchemie » Thu 18 Jun, 2015 8:44 pm

Still having no luck.... I will keep you posted when/if I find the solution.


ANYONE need w201 parts from a 1992 190e 2.6..... ???
I'll post some pics of the donor car soon. Parts are located in Blue Mountains NSW.

KimB
Große
Posts: 1493
Joined: Thu 20 Dec, 2007 5:57 pm
Model you own: w126
Location: Sydney

Re: Voltage leak 180e

Post by KimB » Fri 19 Jun, 2015 6:54 pm

Does the car have an alarm? Sometimes these can malfunction and draw current.
W126 86 300SE Champagne
W126 84 380SEC Signal Red

User avatar
Ivanerrol
Mercedes Demigod
Posts: 5617
Joined: Sat 12 May, 2007 3:21 pm
Model you own: w204
Location: Melbourne

Re: Voltage leak 180e

Post by Ivanerrol » Fri 19 Jun, 2015 10:25 pm

KimB wrote:Does the car have an alarm? Sometimes these can malfunction and draw current.
Very true. There maybe in inline fuse somewhere which bypasses the original fuse box or has tacked into a live circuit under the dashboard.
Also can be aftermarket audio.

Your auto elec should have already tried this. Connect an amm meter in the circuit from the battery. Remove each fuse one by one until the offending circuit is identified.
If removing all the fuses doesn't solve the issue then look for non original wiring.
Or check all the earthing points - particularly the ones behind the instrument cluster.
W211 - E240
W204 - C280
W210 - E240
Departed
W202 - C200, C180, C180
W126 - 380SE , 380SE (Ex SA Import), 560SEL
W124 - 300e, 260e (ex Japan)
W111 220s (Indonesia) 4 speed manual column shift
W123 230
W116 450SEL
W140 420SEL
W210 E240
W209 CLK 240
W201 190e 2.6 (ex U.K.)

alchemie
Dernburg Wagon
Posts: 6
Joined: Sun 31 May, 2015 6:54 pm
Model you own: w201

Re: Voltage leak 180e

Post by alchemie » Wed 01 Jul, 2015 8:22 pm

Right, so I've isolated the voltage leak...

I did some research at university google and found that the hazard lights are hard wired with the indicators.

Therefore, I removed the hazard switch and find that I don't need to disconnect the battery each night. This was not as simple as removing the fuse (don't understand why...) Anyway, now I need to determine why the hazard switch is the problem.

So, my next step is to dismantle the switch and determine which connectors will allow the indicators to work.

Post Reply

Return to “W201”