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demetrio
Dodge Dakota
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10/17/2007
19:47:59
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 Subject: BRAKE LIGHT ON
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The sensor is located right on top of the differential. I did not know what the differential was either until I started reading these forums. It seems like a very easy fix. But when you try to pull the sensor out you will see that an o-ring keeps the sensor stuck. have to use a flat screwdriver to break it off.
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Scott
Dodge Dakota
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12/01/2007
16:59:42
| BRAKE LIGHT ON
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Just finished replacing the sensor on my 99 Ram 1500 4WD AT. Took me about 30 minutes.
My problems were the same as many others here. (ABS & brake light on and speedometer problems).
Paid $42 at AutoZone P# BU3356 for the sensor.
This fixed all of my problems.
The only thing that I can add to the instructions from the previous posts is to take your time pulling the old sensor out. It is pretty tight.
I just kept working on it. I first tried rocking it a bit but it wouldnt budge, but it will spin easy to the point where you can get better leverage with a flathead.
It would have been a quicker job but I had to keep going back to my toolbox.
Here are the tools that I needed.
- 13MM Socket
- 14MM deep socket & wrench
- flashlight comes in handy
- WD40 to help loosen bolts
- a couple flathead screwdrivers
Thanks to everybody else's advise. It did save me alot of money.
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chad
Dodge Dakota
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1/22/2008
17:06:24
| BRAKE LIGHT ON
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I have a 2004 dodge ram. my brake and abs light kept coming on and then would go off when i cute the truck off. they may or may not come back on. at a red light or in park the speedometer would bouce from 0 to about ten. it would do this when the truck was on but wasn't cranked up. i had decided to go and replace the abs sensor. i was about to order one and decided to look on the internet for a part number came across someone with a similar problem. they got a reply saying check the plug located next to the master cylinder. i decided to try that before i went and spent 80 dollars on a sensor. took me forever to figure out how to get it unplugged but finally got it off and it had water dripping out of it. cleaned it out and cleaned the posts.(i sprayed wd-40 in it. don't know if thats how you're suppose to do it but it worked for me.) let it dry plugged it back in and the problem with the bouncing speedometer is gone. just something else to try.
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Pete
Dodge Dakota
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1/30/2008
06:09:06
| BRAKE LIGHT ON
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I have a 2003 Dakota with the ABS and brake light on. Funny thing is it only happens when the temperature is very very cold. When the temp gets above 40F the lights go out. Speedometer works fine. Can't figure this one out. Anyone have any ideas or experience with this type of problem... Thanks.. Pete
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DifferentMike
Dodge Dakota
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2/11/2008
13:26:41
| BRAKE LIGHT ON
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Message:
I have the same issue, engine light (bought a new gas cap as error was P0455), ABS and break light. I'm assuming that the ABS sensor and rear speed sensor are the same?? I went to the dealer and asked for a rear speed sensor, and they gave me one?!?! Of course on the way home, the ABS and break lights went off (*%&$^#&$*)!! Will try to replace anyway. If they are the same, what is the best way to get at it? I don't own lifts or jacks and don't really see a good way of getting to it...assuming I'm looking in the right place.
Thanks.
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Guy
Dodge Dakota
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2/29/2008
01:43:56
| ABS and BRAKE LIGHT ON
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My 1995 RAM 1500 Sport has both the lights on and a good working speedo. RWABS Kelsey/Hayes system. Changed the ABS sensor. Lights still on. Did a ABS code check. Got a code 4. This refers to a: "Close HCU RWAL reset switch". The HCU is the Hydraulic control unit and in there is a reset switch that sends a signal to the CAB (controller antilock brake computer). The precedure I am checking is to unplug both the components above check the terminals (dirty etc.) and check for shorts in the wiring harness. With the test light clipped to your battery and probeing the RWAL reset switch circuit at the computer ABS plug, the light should stay off. If it does go on the HCU is bad, replace it. and the HCU (4 wire) plugged back in. Press the brake pedal firmly, with the test light in the same reset terminal and it should not come on. If it does there is a short in the HCU, replace it. This is from ondemand5. You may need a schematic to find your wire colors and component locations. Hope this helps but it looks like I may be changing my HCU or CAB. I am testing this tomorrow so I have no results. But I never heard of any tests like this in previous posts so I thought you might be interested to know that it is not always the abs diff sensor. Bought mine from NAPA in Canada part number was 530000.
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steven hart
Dodge Dakota
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3/01/2008
11:01:59
| BRAKE LIGHT ON
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guy, at last a post with similar problems to mine. Does your HCU run all the time? Mine does. I pulled the fuse and have just been running without ABS. I have already replaced the rear differential sensor with no joy. Have you been able to open the HCU ? I got mine off but can't get inside it. Please post back when you are done today with your findings. I have not been ablr to find any descent schematics for the system and am very interested in the reset feature you mentioned in your post
Thanks in advance.
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Eric
Dodge Dakota
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3/19/2008
20:57:27
| dakota 2003 ABS and BRAKE light on over 30 mph
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Hi I just change my rear abs speed sensor on my 2003 dakota and now my speedometer is back but, when I run over 30 mph the light comme back again the ABS and the BRAKE LIGHT.When I stop the engine and restarted and everything is ok untill I go up to 30mph
I don't know what else I could do, I'm waiting for help
thanks
Eric
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Deadaye
Dodge Dakota
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7/14/2008
13:17:07
| BRAKE LIGHT ON
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Message:
Message:
Problem: ABS and Brake lights on, Speedometer don't work.
Truck Type: 1999, Dodge Ram 1500, 3.9L, 2WD, Auto Trans
Fix: Speed Sensor on the rear diff.
Part # BWD ABS314 at Advanced Auto Parts, $32
Directions:
- drive rear wheels up ramps
- disconnect neg battery teminal
- top nut 13 MM use box wrench
- bottom nut 14 MM use box wrench
- press connect with thumb and pull connector off sensor
- I used channel locks to twist and pull it up, put screw driver under lip and wiggle to raise. USE CARE, it's in there tight.
- dip finger in hole and put diff oil on new O ring on sensor
- push sensor in and bolt up
- put ignition key in and turn to on position for 30 seconds
- reconnect battery
you're done
Thanks for all the help guys
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97 Dakota
Dodge Dakota
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8/23/2008
19:31:27
| BRAKE LIGHT ON
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Message:
I have the problem and got to looking on my diff, the plug is pretty much mutilated. It is melted, and stuff, it pretty much unplugged it self. I found out with it plugged in, my brakes feel like they have air in the lines, without it plugged in, i dnt think i have abs, and the brakes work fine.. so i am leaving it unplugged.
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PeterO
Dodge Dakota
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2/22/2009
19:22:14
| ABS / E-brake lights on
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I have a '93 V6 5 spd with rear ABS. I just changed the speed sensor to fix ABS and brake light on the dash. My speedometer was working fine. As I have almost never done any work on vehicles I found it a very easy (15 minute) job after researching on the net. The sensor is slightly towards the front of the rear differential. Contrary to many posts I found, I had only 1 bolt and no nuts to remove as shown in the diagram below. Here are the steps I found most useful slightly modified for my experience:
1. Disconnect negative battery terminal
2. Remove 1/2" bolt top using deep box wrench. Remove the cable bracket attached at this point and move out of the way slightly.
3. Press connector with thumb and pull connector off sensor (2 clips on the side)
4. Wiggle sensor out of hole in top of differential.
5. Dip finger in hole and put differential oil on O ring on new sensor
6. Push new sensor into place and bolt in.
7. Put ignition key in and turn to on position for 30 seconds. Step on the brake pedal at this point to put a current drain on the computer system (assures a reset condition)
8. Reconnect negative post of car battery
9. Start truck to test.
Here is a diagram I found on the net showing where the sensor is:
http://arrc.epnet.com/autoapp/8847/8...eed_Sensor.htm
I bought the part at NAPA for $32cdn + tax. Dealer price was $117. OEM part #4485161. Napa part #530000 available in Canada and U.S. I also found the part available on EBay and many online parts stores. Search on the OEM part #.
Hope this helps someone!
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PeterO
Dodge Dakota
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2/24/2009
11:45:01
| BRAKE LIGHT ON
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To fix the link from above post Showing sensor location
http://arrc.epnet.com/autoapp/8847/8847R09_RWAL_Speed_Sensor.htm
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shane
Dodge Dakota
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6/08/2009
15:31:35
|  BRAKE LIGHT ON
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i have the same probs brake light abs light then 2 mons later speedo stoped working all to gether and now i get a code p0107 map sensor is the map code with the abd sensor when i lost speedo thats when i got map code any input plz
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shane
Dodge Dakota
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6/08/2009
15:33:28
| BRAKE LIGHT ON
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Message:
i have the same probs brake light abs light then 2 mons later speedo stoped working all to gether and now i get a code p0107 map sensor is the map code with the abs sensor when i lost speedo thats when i got map code any input plz
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daddio
Dodge Dakota
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6/08/2009
17:04:19
| BRAKE LIGHT ON
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ABS/ BRAKE light on and speedo not working below about 30mph is the RWSS(Rear Wheel Speed Sensor) located in the center section of the rear differential. The MAP sensor code is something totally different.
P.S. Next time instead of dredging up an old post you can start a new one and psot it under one of the other boards as this isn't a recall. You would definitely get a faster response.
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shane
Dodge Dakota
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6/10/2009
20:12:12
|  BRAKE LIGHT ON
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Message:
i changed my rear abs sensor with my 99 durangos and my ram is a 98 look identical but still no speedo and lights are on i get a code for vin# dont match had this code before lights came on and no signal from rear abs sensor i am wondering if it is my abs controll moduel located next to abs pump i checked all wireing seems good any thoughts on this one i have no speedo at any speed it would jump on if i hit a good bump 1 day next stopped all together i am ready to get a new sensor from dodge but dont want to waste money if my durango 1 dont work very odd any input would be great this one has me stomped if my speedo worked i could care less about the abs lol
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TG
Dodge Dakota
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6/15/2009
05:12:31
| BRAKE LIGHT ON
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I have a 2006 dakota. The abs and brake light remain on and also cruise doesn't work. The speedo works fine. any help plz. I didn't see these 3 things in other posts.
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shane
Dodge Dakota
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6/20/2009
02:56:53
|  BRAKE LIGHT ON
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well fixed the truck it ended up being the 3" pigtail at the rear abs sensor the wire broke in the case where it was unditected untill i did a contiuity test and came back bad it also was the sorce of the map sensor code witch is very odd but its back to normall hope this helps someone else with the same probs "1998 dodge ram 1500 slt 8' bed with rear abs only and manuel tranny "
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Friedjim
Dodge Dakota
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6/27/2009
21:03:28
| BRAKE LIGHT ON, speedometer not working, ABS light
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Thank you all for the info.
My 2000 dodge ram 1500 v6 5 speed Had all the symptoms, no speedo, brake light, abs light and engine light all came on at once plus it started ideling lower than normal.
Bought the rear sensor at advanced auto parts for $30.99, installed it in 10 minutes, with all your help and info. My top bolt was a 1/2".
CURED all of these things instantly.
Thank you everyone.
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NWK
Dodge Dakota
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7/13/2009
16:24:42
| BRAKE LIGHT ON
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I had both brake and ABS lights on and the speadometer wouldn't budge until I hit 30 mph. When it did respond it wavered a lot and acted pretty flaky. Also my truck (1999 Dakota, 4wd, 6cyl, manual)would occasionally stall when I slowed down at intersections and the steering became very stiff at slow speeds.
Replacing the rear ABS speed sensor seems to have solved all of these problems.
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