Required Service Light?

Tiny
MADSPEC
  • MEMBER
  • 1994 DODGE DAKOTA
Electrical problem
1994 Dodge Dakota 6 cyl Two Wheel Drive Automatic

How do you reset the required service light
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Wednesday, October 1st, 2008 AT 1:15 PM

19 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:

First, try disconnecting the battery for about a half hour. Then, reconnect it. If you're lucky, that will do it. However, many times you need a computer to reset it.

Let me know if it works.

Joe
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Thursday, October 2nd, 2008 AT 10:47 AM
Tiny
“ FRED AVERAGE “
  • MEMBER
  • 1991 DODGE DAKOTA
  • 5.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 83,000 MILES
Hi Joe, thank you for your time and knowledge. My Maintenance Required light is on, you said in past postings to disconnect the battery to reset it, make it go off.
My question is, if I do this I have been told by someone he used to work at the Dodge dealer, that the engine computer etc, will have to relearn everything and possibly could create other problems? Is this an issue?
Or, if I go to a Dodge dealer, I understand they have a scanning device (it s three letters I believe-DTR? )They can clear it with. Is this true?
Again thank you for your knowledge and your time with this and answering my question. Best, JC
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

First, the book tell us it can only be done with a scan tool. Take a look:

1991 Dodge or Ram Truck Dakota 2WD V8-318 5.2L
Emission Maintenance Reminder Light (EMR) Reset
Vehicle Powertrain Management Emission Control Systems Emissions Maintenance Light Service and Repair Procedures Emission Maintenance Reminder Light (EMR) Reset
EMISSION MAINTENANCE REMINDER LIGHT (EMR) RESET
This output device is located in the instrument panel, and its purpose is to inform the driver that the vehicle requires scheduled maintenance for certain emission system components. The Single Board Engine Controller (SBEC) illuminates this lamp at certain mileage intervals. The controller keeps track of the vehicle mileage by monitoring the vehicle distance (speed) sensor. The EMR Lamp illuminates at 60,000 mi, 82,500 mi, and 120,000 mi.

The manufacturer recommends performing the following procedures at these intervals:

60,000 miles
Replace EGR Valve
Replace EGR Tube (if equipped)
Clean EGR passage
Replace PCV Valve

82,500 miles
Replace Oxygen Sensor

120,000 miles
Replace EGR Valve
Replace EGR Tube (if equipped)
Clean EGR passage
Replace PCV Valve

RESET PROCEDURE
The Emissions Maintenance Reminder (EMR) light can ONLY be reset through the use of a SCAN TOOL. If the engine controller is replaced, the current vehicle mileage needs to be entered into the EMR memory of the new controller. For more instructions on the use of a scan tool, refer to Computers and Control Systems/Testing and Inspection/Procedures.

________________________________________

If the dealer has the adapter for this vehicle, that is the easiest way to do it. Do they have the correct adapter?

The only other way I have ever had it reset was by disconnecting the battery. The computer on this vehicle isn't extremely complex. There is a relearn process, but it does it by itself and takes very little time. You may notice a rough idle or other minor things, but it will go away by itself after a few short drives.

____________________________________

Let me know if you have other questions or need help.

Take care,
Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Thanks very much for your time, knowledge and the detailed info Joe.
I ll let you know how it works out.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Well Joe, I disconnected the positive terminal from the battery for almost an hour hooked it back up, and the light was still on.
Next, I removed both the negative and positive terminals, waited three hours, and the light was still on.
So it appears I ll probably have to go through the dealer and/or find someone who has the proper scan tool to clear it.
Is there a aftermarket/SnapOn/MAC, etc scan tool you could recommend?
Thank you.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Honestly, I don't know which brand to recommend for an OBD1 system. The issue is they are very expensive. If your friend has the one that will work, I would let him try it.

The only other thing I can think of is to disconnect both battery cables and then zip tie them together for about 20 minutes. That will drain any power from capacitors. Other than that, I guess it will require the scan tool. I'm sorry it didn't work for you.

Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Re:Cables tied together.
Okay, that makes sense.
I ll try that next.
Thanks Joe.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
It is just a thought. I do that when I repair TIPM on Chrysler vehicles. It drains the capacitors.

Let me know.

Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
TSARETIREE1
  • MEMBER
  • 1991 DODGE DAKOTA
  • V8
  • 2WD
  • AUTOMATIC
  • 143,400 MILES
How do I reset maintenance required light is I do my own maintenance?
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Disconnect the battery. As far as a scanner, the computer trouble codes are read by cycling the ignition key.

Let me know if you have other questions.

Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Thanks Joe, I connected both positive and negative cables with a jumper cable for about 3 hours, still stayed on. So I m leaving it overnight and we ll see if that does it.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi Fred,

If it didn't clear in that amount of time, chances are it won't. Regardless, I will still keep my fingers crossed. If this doesn't work, it will need the scan tool.

Let me know,

Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Hi Joe,

just found these for sale $180.00.

Factory MOPAR dealer tools;
10105- Engine tool DRB II (good for vehicles up to 1992, not anything 2000 or newer)
(comes with multiple cartridges 1992 and older)
CH5500- Flash programming tool (has to be purchased with 10105)
CH8432- supplemental reprogramming tool.

I have a 1991 and 1993 Dakota, both 2WD 5.2V8 s, one standard cab, other club cab.
So, is this the Magic Box , what I need to make it right-clear the light , plus it will clear Check Engine Light issues too?
Is there a way we can take by phone? Somehow private message ?
Thanks.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
I'm sorry, but we try to keep everything on here. If it gets too difficult, we can figure something out. I hope you understand.

As far as the scanner, can you upload what you are seeing? I have to be honest. OBD 1 ended at the end of 1994, so the idea that it will work up to 1999 is interesting. 1995 - 1999 should be OBD 2.

I tried looking up the part numbers but was coming up with engine parts for a dodge caravan. LOL

Let me know.
Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
“ FRED AVERAGE “
  • MEMBER
Went to the Dodge dealer today and on the way there, the check engine light came on too they cleared them both.
They said their DRB device was on its last leg/worn out.
So I bought the pictured equipment I found for $80.00.
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Wow, if it is in good condition, you got a deal. I just hope you never have to use them because that would just mean more problems. LOL

Take care and let us know if you have questions in the future.

Joe
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
LITTLE AL 1
  • MEMBER
  • 1991 DODGE DAKOTA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
How di I reset maintenance needed light?
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Have you run codes?
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Friday, August 28th, 2020 AT 9:24 AM (Merged)
Tiny
CARADIODOC
  • EXPERT
One of two possibilities. Sorry, can't remember which year they changed over.

On newer vehicles, you need a Chrysler scanner, the DRB2, (Diagnostic Readout Box version 2). It's listed as "SRI Reset" but I can't remember what "SRI" stands for.

You might be able to reset the light with newer after-market scanners but that option wasn't available a few years ago.

On older Dakotas, there is a black box behind the glove box. It's about 3" x 2" x 1 1/2". It has a 9 volt transistor battery that slides out of the end. Leave the battery connected. On the side of the box, near the battery end, is a tiny hole. Stick a straightened paper clip through the hole to press a small microswitch. The switch would be blocked by the battery if you didn't remove it. I can't remember if the ignition switch needs to be on or off when you press the switch. You're supposed to replace the battery at the same time. Just unplugging the battery won't turn the light off.

This light is only on vehicles with truck exhaust systems, which includes minivans, and is supposed to turn on at 90,000, 120,000, and 180,000 miles plus or minus depending on number of key cycles.

Caradiodoc
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Friday, August 28th, 2020 AT 9:25 AM (Merged)

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