Notices
Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

starter battery

Old Jan 5, 2009 | 07:33 AM
  #1  
khaz3al's Avatar
Thread Starter
Member
 
Joined: Mar 2008
Posts: 104
Likes: 0
From: mishref
2005 vw touareg, sl500 r129 SOLD, 2002 sl500 kleemann
starter battery

hi all, i have a 2002 r230. i got the stop engine sign while driving, after a better/alternator sign, and the electrical consumers offline signs. the car was used for the past week with no issues, what could be the problem.

my other question is, if my alternator or starter battery are weak, will this reduce the preformance of my car? if yes by how much? (in hp maybe)

TIA

khaz3al
Reply
Old Jan 6, 2009 | 02:25 AM
  #2  
Ausmbtech's Avatar
MBWorld Fanatic!
 
Joined: Jan 2007
Posts: 1,152
Likes: 29
From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
I would say it's the alternator playing up and or the consumer battery getting weak. Most likely the alternator seeing the message came up while driving.

I'm a bit concerned that you are worried about a drop in HP.......remember, your brakes are electric, you need power to stop!!!!
Reply
Old Jan 6, 2009 | 07:50 AM
  #3  
khaz3al's Avatar
Thread Starter
Member
 
Joined: Mar 2008
Posts: 104
Likes: 0
From: mishref
2005 vw touareg, sl500 r129 SOLD, 2002 sl500 kleemann
lol good point...
but my car is modded and i still dont know why i dont have power.
anyways took it and got the alternator replaced cuz it wasnt working, then the car still shut off... so i have to change the gas pump.

i also changed the consumer battery.
dunno whats next hehe.
Reply
Old Jan 6, 2009 | 08:03 AM
  #4  
Ausmbtech's Avatar
MBWorld Fanatic!
 
Joined: Jan 2007
Posts: 1,152
Likes: 29
From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
What model (engine) SL do you have?
What are the symptoms of the low power (misfire, feels flat, happens when hot/cold, was it sudden to gradual change, what mods do you have, low end or top end power etc)?

What happened when the engine shut down? Was is sudden? did it restart immediately or after waiting?
Reply
Old Jan 7, 2009 | 04:53 AM
  #5  
khaz3al's Avatar
Thread Starter
Member
 
Joined: Mar 2008
Posts: 104
Likes: 0
From: mishref
2005 vw touareg, sl500 r129 SOLD, 2002 sl500 kleemann
the power loss is an older problem. i got the new alternatopr and petrol pump and now everything seems to be ok.
i bought this car not long ago, and the seller told me it put 585hp to the wheel. when i dynoed the car i got only 365hp. the car was not driven for 4 yrs.
he changed the battery at the dealer once and maybe that reset the ECU. do u think i will lose so much power if my ECU was flashed to normal sl500 settings?

it has a 5.6L bored block, brabus heads, and a kleemann supercharger. with kleemann camshaft and headers.
i dont have a kleemann dealership here in kuwait, the closest one is in dubai. so i might be taking it there to check whats wrong with it. or ill just get an ECU tune. from another dealer.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 08:16 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE