Question about 1998 Volvo V70

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The abs on my Volvo V70 1998,seems to activate at low speeds.Can you tell me what is the cause and how to cure this fault?There are no warning lights or codes apparent. Thanks!

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There was a batch of 850s/V70s that had wiring issues with poor crimps under the fuse box. Yours MAY be one of them. It may also be the solder joints on the ABS ECU that need repaired. Send it to a specialist for that.

Posted on Oct 08, 2014

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1. Check the connector to the sensor at both front wheels.
2. Check the ABS module.

Posted on Oct 11, 2010

  • Anonymous Oct 11, 2010

    1. Check the connector to the sensors at both the front wheels.

    2. Check the ABS module that controls the fuel consumption, average speed, distance to go etc.

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1 Answer

Warning light comes on when brake is applied.


items come to mind Low oil in the m/ resevoir and abs not working . Check for fault codes and have the abs checked out. You may have a blown stop light as well.

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ASR - Acceleration Skid Control system.
When ASR warning light blinking the system is activated itself for car acceleration skid control.


For today's typical high-torque engines, traction control (ASR) can increase both comfort and safety, particularly when driving on slippery roads or surfaces offering differing levels of grip. Traction control permits smooth starting and acceleration through the full speed range without wheel-spin or fishtailing.

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ASR only operates in conjunction with the electronic accelerator (E-gas) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.
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The ESP system means the Electronic Stability Program. If the ESP lights on the dashboard permanently the ESP system is faulty. You must access the ESP Electronic Control Unit (ECU) memory for pull out all DTC (Diagnostic Trouble Codes), using diagnostic equipment connected to the data link connector of the car. Then you will be full informed about bad pieces (e.g.: front right wheel abs sensor interrupted, ...). After bad pieces replacement you will be able to erase all faults memored by ESP ECU, in other words reset the ESP system and turn off the warning lamp on dashboard.

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So many lame responses...I went through this same experience and can tell you in my case it was the alternator. All of the warning lights such as the ABS light, airbag light, the warning about the brakes are all because the alternator is not providing the DC voltage all of the car's sophisticated electronics need to correctly monitor these subsystems' status. Mine left me high and dry by the side of Interstate 5 needing a tow. The low battery warning was off and on for about an hour before all of the other warning lights came on, and then about 5 minutes later every needle on the dash went to zero and the car died. After sitting waiting for the tow, it did start up again, but we got it towed to a dealer (thank god it got us within 8 miles of a dealer! the first warnings started when we were in the sticks) who diagnosed it as an alternator. $1200 and two days later and all is well again.

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2 Answers

When I drive my volvo v70 99 sometime brake lamp come up with ABS. sometimes cut off power,however, brake fluid level is fine. Do you think is there any problem?


Honestly dont know about this one ,seems to be a product fault ,and the best people to ask is the local volvo garage ,Yes i know about dealer so called mechanics and they are the **** of many jokes in the motor trade but they do have more idea about silly niggly faults like this on their own brand than a general motor mechanic .

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2 Answers

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ABS control unit recognizes system related problems and causes ABS warning light to come on and stay on under any of following conditions:
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2 Answers

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Usually the ABS computer knows what it is doing. You may want someone to hookup a scanner to the ABS test port.
When I had my speedometer and odometer act up, it turned out to be a bad alternator. You might want to check yours.

Jul 25, 2009 | 1999 Volvo V70

1 Answer

Abs system fault


when the abs is activated it will cause the brake pedal to jump in and out rapidly, and the ABS light will flash at the same time, is this what u are asking? is this normal? yes.

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Winter driving mode volvo s80


the ring you mention removed is called the exciter ring and is a vital part of the abs system to work properly so have new ring fitted asap this is why abs light etc is on in the uk this would fail mot safety test i am surprised the garage?? did ot renew this exciter ring? knowing it affects the abs ie makes it none operational should it need to operate ? also if involved in accident? and car brakes are checked this serious fault may have an effect on insurance claim hope this explaines??

Dec 04, 2008 | 1999 Volvo S80

1 Answer

ABS Light


It's possible that you have a dirty or somewhat damaged ABS/wheel speed sensor. These sensors are either on the wheel hubs near the rotors, or (at least in the rear) possibly on either side of the differential. Being under the car, they're prone to damage from the elements, from road debris, etc. You may have a wire or connector on a sensor damaged. A scan of your car's fault codes should reveal whether it's a wheel speed sensor or something else though. On my Audi, a scan tells me which sensor is faulted, and this could be the case on your Volvo as well. Have the codes scanned at AutoZone (it's free, vs paying labor at a dealership) and post the resulting codes (if any) in another post here. From there, we can likely figure out the problem. Also, check to make sure you have enough brake fluid - if you're low, it could cause a malfunction in the ABS system.

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