Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
My wifes 850 has a rebuilt Midwest ABS module, recently the ABS light has started coming on intermittently. I checked all the sensors and the resistance was in spec. After re-seating the module the abs light extinguishes once the car starts moving but it stays light after the initial engine start.
Is that normal, if so I assume that is because codes have been previously stored?
If not is there a way to erase the code?
Thanks
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice
I think that if you unhook the battery for a while the codes should be gone.
If not, I usually go to the dealer for that.
And, be sure that the connection and wires to the ABS unit are still in decent condition. Last time my ABS light came on intermittently I boticed that the 2 big black wires running to the module have peeling and cracked insulation and are oxidized green. I used WD40 as a temporary fix.
One more thing: if the system voltage drops really low
strange warning lights can come on. I had that even with a running motor, but the starting process must have drained the battery enough to screw up the dash lights.
Sometines my ABS and SRS lights take a few seconds longer than usual to go out.
mecheng wrote: ↑Thu Jan 09, 2020 10:15 am
Happy New Year MVS
My wifes 850 has a rebuilt Midwest ABS module, recently the ABS light has started coming on intermittently. I checked all the sensors and the resistance was in spec. After re-seating the module the abs light extinguishes once the car starts moving but it stays light after the initial engine start.
Is that normal, if so I assume that is because codes have been previously stored?
If not is there a way to erase the code?
Thanks
Adding to Clemens’ post, my experience below with low battery voltage !
Matty Moo wrote: ↑Mon Jan 13, 2020 2:42 pm
Codes are stored in the abs module. Disconnecting the battery won't reset them, the light will stay on when there's an active fault.
Thank you, that is what I thought. So I assume you guys use VIDA Dice?
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice
Matty Moo wrote: ↑Mon Jan 13, 2020 2:42 pm
Codes are stored in the abs module. Disconnecting the battery won't reset them, the light will stay on when there's an active fault.
Thank you, that is what I thought. So I assume you guys use VIDA Dice?