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BL Mazda 3 - ABS & Traction Control Light On

482 Views 16 Replies 4 Participants Last post by  Jughead0691
Hello people,

I've got traction control and ABS lights on (BL Mazda3 Neo). Any ideas? Would a faulty ABS pump cause this?
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Will be interesting to follow your posts, I have the 2011 Mazda3 BL and 8/9 months ago I had the same problem, went to the dealership and they checked codes and did reset and all was well for about a month and then the ABS lights came on again, had to order a new ABS module which took 6.5 months to arrive in Australia and had fitted just last week, --- and shortly after the module failing, the auto trans went into rough upshifts, the power steering went heavy while driving and when parking at times, just went dead, the speedo stopped working, the brakes went doughy, replaced the master cylinder and that fixed that, eventually the engine exhaust note started to go flat and drony with a consistent louder drone as if there was something drumming in the exhaust, --- after fitting of the new module, all of the listed problems went away and the car became a ZOOM ZOOM again.

So from what I have written, take note of any other problems that may develop over time.
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Thanks for the response and info👍
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sometimes its not as extreme as the whole module... but a bad wheel speed sensor or the wiring harness/ electrical plug to it... need a scanner that can read each corner to rule it out quickly. or do it the old fashion way with a voltmeter and spin each corner to see the readings

those 2 lights on means traction control and abs is disabled, but still be able to drive the car until the electrical fault is found by a technician or a diy with a decent scanner.

Just leave yourself some space cushion in front of you so you dont need to do any panic stops
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sometimes its not as extreme as the whole module... but a bad wheel speed sensor or the wiring harness/ electrical plug to it... need a scanner that can read each corner to rule it out quickly. or do it the old fashion way with a voltmeter and spin each corner to see the readings

those 2 lights on means traction control and abs is disabled, but still be able to drive the car until the electrical fault is found by a technician or a diy with a decent scanner.

Just leave yourself some space cushion in front of you so you dont need to do any panic stops
Thanks for the response. As it turns out, the ABS pump/module was faulty. I purchased a new unit and installed it. I bleed the brakes the old fashion way. The vehicle brakes very well and the ABS light is now off, But, the orange/amber TCS/DCS light stays on. I've been digging about online and there's a few posts about turn the steering wheel from left to right whilst stationary. I tried that, the light is still on. As I don't have a scan tool that I can diagnose this with, I'm thinking it might have bad ABS wheel sensor. What's your opinion?
Have you driven it? At least on one car I have some lights don't go out until the car makes it 50 feet.
Have you driven it? At least on one car I have some lights don't go out until the car makes it 50 feet.
I have driven it. ABS light goes out on start up and stays off when driving. I've removed and tested the all ABS wheel sensors, and they seem ok. But now the ABS light is on after refitting them. I'm going to have to invest in a better scanner, my current OBD scanner is only for engine faults and that's it.
I have driven it. ABS light goes out on start up and stays off when driving. I've removed and tested the all ABS wheel sensors with a mulitmetre (OHMS test), and they seem ok. But now the ABS light is on after refitting them. I'm going to have to invest in a better scanner, my current OBD scanner is only for engine faults and that's it.
Thanks for the response. As it turns out, the ABS pump/module was faulty. I purchased a new unit and installed it. I bleed the brakes the old fashion way. The vehicle brakes very well and the ABS light is now off, But, the orange/amber TCS/DCS light stays on. I've been digging about online and there's a few posts about turn the steering wheel from left to right whilst stationary. I tried that, the light is still on. As I don't have a scan tool that I can diagnose this with, I'm thinking it might have bad ABS wheel sensor. What's your opinion?
I am curious Jughead where you were able to buy a new ABS module so quickly?, was this a rejuvenated one from a re-builder in your area?.

Should you upgrade your code reader, get one that will bleed the ABS module, from what I have read, the ABS has to be bled by computer control.
I am curious Jughead where you were able to buy a new ABS module so quickly?, was this a rejuvenated one from a re-builder in your area?.

Should you upgrade your code reader, get one that will bleed the ABS module, from what I have read, the ABS has to be bled by computer control.
I purchased a unit from a wrecked vehicle. And I am looking around for a better scan tool.
I purchased a unit from a wrecked vehicle. And I am looking around for a better scan tool.
I hope the module works out ok for you.
I hope the module works out ok for you.
The module did work out mate. But the traction control light stays on though. I've used a snap on scan tool and checked and erased all codes. Test drive, light still on check and scan for codes. No codes. I'm at a bit of a loss ATM. Anu ideas?

This is the best I can do, the TCS is part of the ABS module system and what I have read on the bleeding of the brakes, the ABS module has to be self bled with a compatible OBD2 code reader that will bleed the ABS module.

I cannot help you with why there is no fault code, are you getting an ABS fault code at all?.
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I have a PDF copy of the Mazda3 manual that covers the BL, it is the American version and covers all the BL models built, would you like a copy?.
I have a PDF copy of the Mazda3 manual that covers the BL, it is the American version and covers all the BL models built, would you like a copy?.
That'll be fantastic. Thank you. PM me please and I'll give you my email address.

This is the best I can do, the TCS is part of the ABS module system and what I have read on the bleeding of the brakes, the ABS module has to be self bled with a compatible OBD2 code reader that will bleed the ABS module.

I cannot help you with why there is no fault code, are you getting an ABS fault code at all?.
No codes at all.
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