Question about 1998 Mercedes-Benz SL 500

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More able to start my mercedes sl500 1998, the battery loses its charge the fuses checked and everything is ok, there is something that discharges the battery

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  • Mercedes-Benz Master
  • 449 Answers

First, make sure the battery is good. If it normally goes dead in 1 night disconnect the battery for 1 night and if the car starts the battery isn't taking itself down. The next thing to look for are things that can be on with the ignition switch off such as glove box light, trunk or hood light, brake light cigarette lighters if it has them, interior lights. For the bulbs you can't see like the trunk light open the trunk then quickly but carefully touch the bulb if it's staying on it will be hot to the touch. Be careful if some bulbs have been on a long time they can burn you. I hope this helps. Take care.

Posted on May 16, 2019

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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SOURCE: Won't start

Dear The FixYa Team,
To answer your question, No I do not have spark or fuel pressuer.
My husband has checked all the fuses, ignition switch, crank shaft
sensor & computer. All these check out. Any suggestions on what
we can do next. We appreciate your help with our problem.
Thank You, mindiescott


Posted on Sep 12, 2008

  • 4 Answers

SOURCE: Instrument panel went dead

Checked Every fuse in the fuse box (no small task).This includes #4 - Power point Instrument Panel, #14 - Day time running lamps (auto lamps doesn't work nor does auto lock), #27 - ignition switch run feed, #35 - Instrument Cluster, #41 - Instrument Cluster, #42 - Delayed Accessory, #45 - Ignition switch run/start feed, #102 - Door locks body security module, #103 - Ignition switch, #110 - Ignition switch, & #116 - Ignition switch. But I also check all other ones as well, they all register OK. AC panel & radio work. Turn signals work. Mileage does not work, trip computer does. So, basically, everything works except auto head-lights, auto locks, and the dash cluster (no MPH, RPM, mileage display, Fuel, Temp, Tran Temp, and Oil Pressure).

Posted on Sep 30, 2009

  • 271 Answers

SOURCE: 1993 VW Eurovan idling fine then it cut out and

Change ignition amplifier

Posted on May 16, 2010

97F350diesel
  • 1326 Answers

SOURCE: 89 ford probe wont start, engine cranks ,

Its pretty hard to test the fuel pump relay. Easiest way to test fuel function is at the motor from the fuel rail. There should be a high pressure fitting (similar to a tire valve stem) that you can push in to check for fuel. It should squirt out (fuel) if the pump is sending fuel to the motor and if not start back tracking looking for fuel pump/pressures/leak issues. If you decide to replace the relay then I would suspect $30-$50 or find a decent on at a junkyard. The relay should click when ignition is turnerd so u know its working properly.

Posted on Jan 22, 2011

tunde007
  • 2382 Answers

SOURCE: 2002 kia Rio Altenator

Hi, the actual output voltage produced by the alternator will vary depending on temperature and load, but will typically be about 1-1/2 to 2 volts higher than battery voltage. At idle, most charging systems will produce 13.8 to 15.3 volts with no lights or accessories on. This can be measured by connecting the positive (+) and negative (-) test leads of a voltmeter to the battery posts while the engine is running.

Possible cause of the alternator not charging includes Slipping or broken alternator belt, Open diode, Open circuit in stator windings, Open charging circuit, Open field circuit, Worn brushes or slip ring and Defective voltage regulator..

Posted on Feb 27, 2011

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1 Answer

My Mercedes e320,2003,85,000 miles, sometimes doesn't start -not a kick. Go back some time later and it starts. Battery checks ok and starter diagnosis ok.What may be the problem?


You didn't say when it doesn't start whether the battery seems discharged or whether the dash lights and headlights and stuff remain bright and functional? If they do but the engine won't crank, there is a problem with the starter circuit.
In that case the fault could be a relay, wiring or any connection, a faulty starter switch or the immobiliser not disarming (try using a different key). I would rig a temporary starter switch from the battery to the starter solenoid so I could crank the engine on the occasions it didn't start. If it still didn't start I would suspect the immobiliser.

If it is a case of the battery seeming discharged when it isn't the fault is with the battery circuit. I had a similar trouble once and eventually traced it to a bad crimp where the battery cable was attached to the battery terminal. It looked normal until I cut it off and sectioned it with a hacksaw.
Of course it could be something else entirely...

Jun 13, 2016 | Mercedes-Benz E320 Cars & Trucks

1 Answer

The electrical system on my 2006 Buick Redezvous is making the car not start, my ac won't work as well as my backup lights. The garage wants to charge me $180 for each of several diagnostic checks..


have the battery checked out with a carbon pile discharge tester , this will test the battery under load , then test the alternator to see if is charging ok, make sure the battery terminals and posts are shiny clean, check the back up light fuse and switch, and check air con fuse . if the battery is below 10 volts the engine may crank but it wont start.

Mar 03, 2016 | 2006 Buick Rendezvous

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1.0l 3 cylinder 5 speed. Why won't it start with key when it's cold out?


SOUNDS LIKE BATTERY IS WEAK,,TAKE IT TO AUTOZONE HAVE BATTERY CHECKED!

Jan 22, 2016 | 1995 Geo Metro

1 Answer

Hooked up my new battery backwards, blew the main fuse. It has been replaced and now the meter fuse in the inside fuse box blows within seconds and gage cluster and alternator not working


Could have damaged regulator. When the car is running have you checked the voltage at battery terminals. If battery is charging it should be around 14 volts. If around 12 your charging system is fubar.

Meanwhile if you have to charge the car every day then something in the car is draining the battery, Using an ammeter you need to track it down, Hook it up to battery and pull fuse out one at a time till the drain goes down. That isolates the circuit with the problem.

Dec 03, 2015 | Cars & Trucks

1 Answer

Seat ibiza faults


Check alternator charge rate and earth straps

Jun 19, 2014 | 2007 Seat Ibiza 1.2

1 Answer

I have a 97 galant that keeps blowing the 100 amp fuse? alternator tested good twice checked wiring reads good is there another fuse ?


Usually that fuse powers the alternator and the fuse box.
It would have to be a big short to ground to blow that fuse.
Its possible the main wire to the alternator is touching a metal spot, or the alternator is shorting out inside when it is running.
What is draining the battery may be something else, or the battery could be discharging after the fuse blows if the alternator is not charging it.

Apr 15, 2013 | 1997 Mitsubishi Galant

1 Answer

1983 mercedes 300D replaced 3 alternator, still dos'nt charge.


check the voltage at battery with car off. it should be at least, 12-13 volts. then start the car. if alternator is charging it should read at least 13.5-14.2 or better. to test and see if alternator is ok. remove negative cable to battery while running. if car does not quit its ok, if it does its bad or you have a wiring problem. this is how I check for a bad battery as well as above! hook volt meter to battery, turn on headlights with car off. if it drops way down battery is bad. check all fuses and ground wires to charging system if need be.

Jan 27, 2012 | Mercedes-Benz 300D Cars & Trucks

1 Answer

No power and short beep sound


check battery, most batteries have a clear circle which you look into and it should be green if battery ok and black if not. confirm by checking voltage in battery with multimeter, if under 12v get charged or replace and try find out why drained or left something on in the car. if battery ok check fuses.

May 01, 2011 | 2009 Mercedes-Benz GL-Class

2 Answers

My 2005 Mercedes E320 CDI is showing malfunction in red with a battery displayed and saying take to workshop. Car has been parked. However, it starts ok and battery doesn't seem too low.


The auxiliary battery needs to be replaced. It's a smaller battery than the one you have in your trunk. If you take it to your dealer to have it checked out it will run around $300 to change, and on top of it they charged me $50 to diagnose the problem.

Nov 03, 2010 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

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