[streetfighter]

My 2010 Fiesta 1.6S is showing the ABS failure indication. I checked with a local trusted garage who did a scan and found the right-rear bearing gone bad and this may have damaged the sensor. He wants to change only the bearing first (Rs1850) and then see if the sensor works normally. if not, the sensor would need replacement too (Rs9500). Are the prices and the diagnosis reasonable?

[Mr.Boss]

Originally Posted by streetfighter

Are the prices and the diagnosis reasonable?

Yes.
But before changing the bearing swap the sensors (LH to RH if possible, or from other vehicle) and check if they are faulty.

[streetfighter]

Originally Posted by Mr.Boss

Yes.
But before changing the bearing swap the sensors (LH to RH if possible, or from other vehicle) and check if they are faulty.

Thankfully, only the rear bearing was damaged and was replaced. The ABS light went away and no errors on scan afterwards, so I guess the sensors are ok. I also replaced the battery as it was being weak.

[ajmat]

I have been facing this problem with my VW Polo. This car had been dormant for over 1 year and the battery was flat. The light comes on, then later on it disappears. I first thought it was to do with ambient temperatures and corroded connections.

My mechanic Azaan scanned it and found nothing wrong with the ABS module. The culprit is the battery holding a low specific gravity. He advised me to drive it around for a few days and if all fails, replace the battery.

The trick is to start the car and drive off. After 5-10 min when the battery has gained some voltage. Stop at a traffic light, switch off. Wait for 2 seconds and restart! Lights out!

[Mr.Boss]

Originally Posted by ajmat

I have been facing this problem with my VW Polo.
........
The culprit is the battery holding a low specific gravity.

Fiat will throw similar error, Linea / Punto to be specific

[motorguy]

On my 10 year old i10 (2010) model was driving to Chennai from Bangalore during the weekend. As I approached Chennai, the ABS light and hand brake light suddenly came on. The hand brake light wouldnt go off even thought i engaged and disengaged the hand brake a couple of times. After a few times switching off and restarting, both errors went off.

Since I was about 15 km from Oman Hyundai in Poonamalee, Chennai, I drove there to check it. They connected the Hyundai GDS software and 2 codes were displayed:
1. ECU Hardware error
2. Intermittent fault right rear ABS sensor.

Also found the the battery was weak in 3 or 4 cells. So I also had the battery changed.

Was more concerned about the ECU error since the ECU can cost upward of Rs.45K. The mechanic first said that the ECU error could be related to the ABS error or due to a low voltage on the battery. Anyway they clear the DTC errors and we went for a test drive with the GDS software connected to the OBD port. Found that 3 of the sensors were sensing speed but the 4th one (rear right) was consistently displaying the "Intermittent" error.

Unfortunately Oman Hyundai said they had to order the part. Since I had to leave Chennai in a day, they said I can change it at Trident Hyundai Bangalore . Called the Trident Hyundai Adugodi manager and requested him to order the part (i.e. the sensor). The part came in on Saturday afternoon and I went there on Monday to fix it.

On my way back , managed to drive around 280 km without the ABS light coming on. However, upon reaching the Krishnagiri toll gate, the light again showed up. Switched off a couple of times and the light disappeared.

Initially after fixing the sensor, it still wouldn't sense the speed. However clearing the past DTC errors on the GDS software enabled it to finally sense the speed. The mechanic was very sure the ECU error was related to the sensor error and not a fault with the ECU (he said out of 100 cars only 1 or 2 will have an ECU failure). We also ran the car with the GDS software connected and found all 4 wheel sensors were sensing the speed after the replacement of the rear right sensor.

Anyway, went there again the next day after the repair and no errors were showing so seems like the problem is fixed. There was no ECU error either.

Incidentally, since mine was an old i10, only the sensor (and not the entire hub) had to be replaced (Cost : Rs.1300 including labor). However for the new cars the sensor is integrated with the hub and the entire hub has to be replaced (the sensor alone cannot be replaced). The cost is around Rs.5000 for the hub with the sensor depending on which Hyundai model.

[joshguy]

Hi All

I own a 2012 Innova which has done 85000km as of today.

After the 70000 service i started hearing a sound whenever i released the clutch in cold start, so called Toyota and they had the car for a day ans said that they could not hear any sound , so i asked them to return the car.

Sometime around 77-78k kms this sound became prominent and started coming whenever clutch was released or car fell in a big pothole while i am pressing the brake pedal t. I gave it to Lanson Toyota and after inspection they informed me that its the sound from ABS actuator . SA told me that it is only a noise and nothing to worry about it , i asked him if we need to replace it and he answered its an expensive part (1L Plus) and so not required

I want to know if any of the BHPian had this issue or heard of such issue and what is the way out for me as the sound is annoying.

I am also worried if it may fail at any point of time

Can i overhaul it outside Toyota workshops or can i get used parts in the market ?

Please advise

[Swapnil4585]

Toyota Corolla Altis.

The ABS light is coming up since noon. The battery is drained. This is all of a sudden. I'm driving the car once every ten days, for few hundred metres only. Battery is new and I didn't have any issues with it.

As for the ABS, the brake fluid level is fine. Just that I had washed the engine bay nicely 4-5 days back. The tyre pressure is also lesser since cannot top it up. One point is that rear right shock absorber is leaking.

Whether the washing of the bay must have caused both these issues? Should I reset the battery?

[Rahul Bhalgat]

Hi.

The ABS light in my SX4 VVT ZXi of 2011 was ON and it was staying ON all the time.

I procured an OBD2 bluetooth v2.1 dongle and scanned through Torque Pro Android app. It did not show any fault code; it said "no faults".

Upon tracing the wires from each sensor, I found that the wire from the front right sensor was broken (probably bitten by rat) inside the hood. Fixed the wire and the ABS alarm light has disappeared now.

Wires from the front sensors are easier to trace. The sensor is located on the front hub. The wire can be easily seen inside the sheel well, from where it can be easily traced into the engine compartment. After entering the engine compartment, it enters into a bigger bunch of wires, duly covered in a conduit. The wire had broken just before entry into the conduit.

[vigsom]

Originally Posted by Rahul Bhalgat

Upon tracing the wires from each sensor, I found that the wire from the front right sensor was broken (probably bitten by rat) inside the hood. Fixed the wire and the ABS alarm light has disappeared now

Great job; else some advisor at a service center would have asked you to replace the ABS sensor.

Toyota and Maruti cars' ABS sensors generally never go bad. Clipped wires are the reason for the ABS error. The portion of the ABS feedback cable inside the wheel well and then further down near the frame adjoining the wheels is where rats attack and clip them off. The front right wheel ABS sensor signal is also fed to the speedometer in most cars.

Adding a link:

https://youtu.be/7FwhY7nYF7o

[Rahul Bhalgat]

Originally Posted by vigsom

Great job; else some advisor at a service center would have asked you to replace the ABS sensor.

Toyota and Maruti cars' ABS sensors generally never go bad. Clipped wires are the reason for the ABS error. The portion of the ABS feedback cable inside the wheel well and then further down near the frame adjoining the wheels is where rats attack and clip them off. The front right wheel ABS sensor signal is also fed to the speedometer in most cars.

Thanks; it never striked to me that the ABS sensor signal can also be used for the speedometer. In my case, the speedometer was working as usual when the ABS warning was ON.

The wire was bitten precisely at the place you pointed out.

[audioholic]

Originally Posted by Rahul Bhalgat

I procured an OBD2 bluetooth v2.1 dongle and scanned through Torque Pro Android app. It did not show any fault code; it said "no faults".

Upon tracing the wires from each sensor, I found that the wire from the front right sensor was broken (probably bitten by rat) inside the hood. Fixed the wire and the ABS alarm light has disappeared now.

Quite a common problem. My cousins SX4 has had this issue twice due to rat bite. But a generic OBD reader would not pick up this error since it exists in the ABS module. The OBD reader can only read errors from the Engine and a very few other codes which are OBD2 compliant. The rest of the errors are manufacturer specific and can only be read through special tools.

Originally Posted by Rahul Bhalgat

Thanks; it never striked to me that the ABS sensor signal can also be used for the speedometer. In my case, the speedometer was working as usual when the ABS warning was ON.

The speedometer signal is picked up from the gearbox and not from the ABS sensors. It is also used as a reference by the ABS module to compare individual wheel speeds, though it is somewhat the same speed, perhaps with the front differential in picture.

[draakov]

Hello everyone

I am from Manjeri in Kerala and I am having an issue with my Hyundai Creta 1.6 SX Diesel 2017 model (44242 KM). Since last Wednesday, my car’s ABS and Handbrake signals are ON even while driving and the Speedometer and Odometer are dead, the car has an undue jerking when the leg is lifted off the accelerator for a gear change and the steering is much free. I took the car to Hyundai service and they told they couldn’t connect to ABS during car scan and the problem may be a faulty ABS control module. They power supply and wiring are ok as per their inspection.

Now I am left with two options, either go for a genuine hyundai replacement which may cost above 30K or go for a second hand product that may cost around 10K. In both cases, there will be no warranty.

What is the next best thing to be done? Is there any alternative solution? Anyone had similar experience and what did you do, especially from Malabar area?

Much thanks