Have ABS DCS/TCS issues with lights staying on? - Page 7 - RX8Club.com



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Old 04-19-2018, 07:38 AM   #151  
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High guys,

I really need your help before spending any more money.

My 8's DSC light is permanently on.
I tried everything I know until now, like:

a. Main switch on and fast pressing the brake pedal, until the needle in oil pressure gauge moves, RESULT: nothing

b. Main switch on, turn the steering wheel to the end left and to the end right, switched off and after that start the engine, RESULT: nothing.

c. Checked for any fuse unplugged, everything OK.

d. I've driven the car for more than 1000miles and the DSC light is still on.

e. I plugged a diagnosis PC into OBD2, erased all the shown errors, RESULT: nothing.

BUT, there is another issue, the battery light is also permanently ON.
The voltage indication through ScanGauge is 13,2 maybe 13,4 Volts.
I know the alternator doesn't charge the battery well.

The technician seemed pretty sure and suggested that as soon as we replace the alternator with a new one and we get a correct voltage like 14,5V, the battery light will turn off, and all the DSC systems will be back on line (which means the DSC light will turn off, I guess).

Has any of you came across with the same DSC malefaction..??
Any suggestions?
Do you think the problem with DSC starts because of the insufficient alternator...???

Please advise..!!!!
Thank you in advance.
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Old 04-19-2018, 09:01 AM   #152  
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Did you read the thread?

Check the third brake light wiring. It's certainly possible your battery situation is playing into this, and it's the bigger problem so see if fixing that fixes the DSC light.

Is it just the DSC light or ABS also?
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Old 04-19-2018, 11:55 AM   #153  
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Ok, I checked and replaced the 3d stop light bulb which hadn't been working a lot time ago and before the DSC problem.

Did again the turning steering wheel reset.

Still nothing

I didn't read the whole thread just a couple of pages.

So guys, the DSC light is still on, should I replace the alternator to get correct voltage, what do you think...??

Thank you
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Old 04-19-2018, 11:59 AM   #154  
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And a last thing I didn't mention.
the car was on the Dyno before the DSC problem starts.
The battery was disconnected a lot of times during the Dyno session and without moving the car for 2 days in a row...

After that, the alternator malfunction started and the DSC light remained lit.

​​​​​​Any ideas please??
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Old 05-16-2018, 02:32 AM   #155  
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Hello again.
I have an update about the DSC light which is still on.
Also the ABS light turned on a week ago...

I replaced the alternator with a brand new one 200Amps.
After a week I also replaced the battery with a brand new one...

I still have low voltage 13.2-13.3V regardless engine's rpms...

I think the problem with ABS and DSC lights comes from the low voltage...

Any ideas...???
I'm getting tired with these stupid stuff...
Thank you in advance...!!!
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