E220 W124 Coupe Battery Keeps Draining

[Hinesh Khatri]

Hi All.

I have just brought a 1995 W124 E220 Coupe and noticed the battery keep drying after a couple of days. Reading forums on the internet I have tried the below and still no luck.

Remove the boot blub.

Remove the negative cable from the battery and using multimeter cables connect red multimeter cable to negative cable from the car and black multimeter cable to the negative of the battery. Put the setting to 20amp on the meter and getting a reading of about 12 amps.
Does this mean something 12amps is draining the battery constantly?

I brought a battery charger and charged it over night and the car started at one go.

I not sure what to do. Any ideas anyone?

 

[bembo449]

buy a clamp meter , they are cheap off fleebay , stick it on the live lead , let the car go to sleep ( not sure 124's need to ) then start pulling fuses till the meter zero's , job done

 

[Hinesh Khatri]

Thank you Will try this.

 

[bembo449]

its a tried and tested way of getting to the bottom of electrical drains , ive used mine on several vehicles since I go it pal , always finds the culprit

 

[DREAMER NO2]

You can bet this is due to a alternator regulator, an easy repair just 2 screws to remove the old regulator and replace with a new Bosch regulator .. or you could go cheap but wont last as long .