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Volvo V70 ABS light on, speedometer dead, going to safe mode and loosing power with possible check engine light on

Posted by OurVolvo.com on Nov 24, 2012 in 1999 Volvo V70

This happens in the beginning of the fall. It could be quite scary. The ABS light comes on randomly and as it persists the speedometer goes dead at zero while doing 60-80mph. As it persists the Volvo goes into safe mode (not passing third gear), looses power and eventually check engine light comes on. Possible codes P1057, P0600, P1081, P0722, P1054 and as usual most of them are only detected by the special Volvo code readers.

The problem is in the ABS module touching somewhere due to vibration and returning short signal. You can replace the whole ABS module which will cost several hundred dollars or use this easy fix described by Enes. I used a folded Wal-Mart card that is still doing the trick for our Volvo V70.

Having a problem with Abs and Traction control is not a rarity on a V70/S70 Volvo. It is a common and expensive problem caused mostly by the Abs Module. The right way to fix this is to get a new one put in. It does not come cheap though, it’s over $400 for a new one and $200 to rebuild

Is there a way to go around it? Yes, there is(sometimes). I tried this”unorthodox repair” on a 1998 V70 and it worked. Actually it’s still working 13 months later. It’s cheap and it required 15min of my time. Abs Module is located on the left side of engine compartment under the fuse box. Good news is…you don’t have to remove it at all.

The whole idea consist on putting some space between Abs pump and the Module. It can be done with almost everything: wood, cardboard, plastic. In my case I used a scrap piece of plastic.

Take the spacer and push it between the pump and the module. Make sure it stays tight and won’t fall while driving.

There we go..no Abs and Tracks light anymore and it’s working fine.

I tried this method on 3 different Volvo’s with the same problem and it worked fine on 2 of them. No guaranties though but you lose nothing by trying it anyway.

Now, don’t forget to clear your check engine light if it is still ON!

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Brake Light Switch on a 1999 Volvo V70

Posted by OurVolvo.com on Jan 15, 2012 in 1999 Volvo V70

Detecting a problem with the brake lights on 1999 Volvo V 70 Classic (North American Edition) is easy, especially with the help of our friends at http://www.volvotips.com/

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If your light bulbs and fuse are OK, the problem is most probably the self adjustable brake light switch located at the top of your brake pedal. The problem in 99% of cases is there and not in your relay. BTW on the North American Classic model the relay is NOT in the trunk compartment (neither left nor right side, since they are empty) but behind your radio. Start messing with the relay ONLY if you are sure, the problem is not in the (1) fuse, (2) bulbs or (3) the switch.

2012-01-14_185802_brake_switch1The brake light switch on the 1999 Volvo V 70 is a fairly simple device fabricated by Volvo to activate your brake light when the pedal is pressed and deactivates when the pedal is not pressed, in which position the pedal and the switch actually touch.

The most probable reasons why your switch is failing, is the small white cylinder which provides the adjustable part of the switch. Often, if you press on the pedal with one hand, you can adjust the white adjustable cylinder with your other hand for a (temporary) fix.

In most cases, however, the small tracks on which the white cylindrical adjuster moves ware out and cannot be restored. The safest thing to do is order a new one at about $40-50 at any auto part store. We got ours at Advanced Auto Parts which has always been helpful in diagnosing our problems. The replacement of the switch is shown on the following picture (and yes, it is possible to remove the switch without breaking it):

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It is also possible to take the switch apart. In our situation, the switch had started to fuse together at the two metal points which provide the actual contact for the electric circuit. Yes, you could brush it and clean it to be reused, but do you really want to do that at the risk of your brake lights not working (which BTW is illegal to drive with in North America).

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