My 89 500sel goes into limp home mode constantly

Asked by stevensm Jan 21, 2015 at 08:50 PM about the 1989 Mercedes-Benz SL-Class 500SL

Question type: Maintenance & Repair

Hi,
ASR light comes on as soon as try to drive car , then goes into limp home, stopping and
restarting vehicle removes light and resets but as soon as try accelrate or drive for 2-3
yards light comes back on and car goes into limp ?

500 SEL G plate

4 Answers

15,895

You will probably need to replace your computer. It is protecting the engine/transmission when it does this. Contact your MB dealer for an estimate. Sit down!

15,895

Wait... sorry, I didn't pay attention to the year. I am not sure if the 89 has the computer or not. If it does there is the problem.

20

I fixed mine definitely by myself and you could do it too. 1- Open the hood, Jack the vehicle. On both front tires you will see a cable that looks like a Rca jack that connect to the brakes but it's bigger than RCA jack. 2- Follow that RCA cable to the hood and on the other end tou will see 2 small white wires that bring power to ASR and ABS system cut those 2 wires and you automatically disable the ASR and you solve the problem. As you know the ASR system is good for snow, it's like a 4 by 4 and you will need it later to drive safely in bad weather when there is snow. What to do next. After cutting the 2 small wires, I put 2 swiches in case I need the ASR in bad weather.One swich for ASR and the other one for ABS. when you cut one wire you connect both ends to the swich and you do the same for the second wire that you cut. The only one thing you will see is the ASR and ABS light will turn on on the dash. When driving in bad weather, open the hood and turn on the swich.

Your Answer:

SL-Class

Looking for a Used SL-Class in your area?

CarGurus has 2,225 nationwide SL-Class listings starting at $5,199.

ZIP:

Own this car?

Share your experience with others.

1989 Mercedes-Benz SL-Class

Review another car

CarGurus Experts

  • #1
    bobkat
    Reputation
    2,720
  • #2
    Michael Kane
    Reputation
    700
  • #2
    twhobie
    Reputation
    700
View All

Know more, shop wisely

Search

Related Models For Sale

Used Porsche 911
428 Great Deals out of 4,470 listings starting at $15,950
Used Chevrolet Corvette
773 Great Deals out of 14,459 listings starting at $3,900
Used Mercedes-Benz G-Class
127 Great Deals out of 2,824 listings starting at $15,988
Used BMW 7 Series
189 Great Deals out of 4,007 listings starting at $1,200

Used Cars for Sale

2024 Mercedes-Benz SL-Class For Sale
319 listings starting at $104,699
2023 Mercedes-Benz SL-Class For Sale
11 Great Deals out of 130 listings starting at $78,995
2022 Mercedes-Benz SL-Class For Sale
14 Great Deals out of 148 listings starting at $89,950
2020 Mercedes-Benz SL-Class For Sale
21 listings starting at $50,289
2019 Mercedes-Benz SL-Class For Sale
3 Great Deals out of 29 listings starting at $39,401

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.