"Sys" flashing

[92whiteZ]

Hello everyone,

Got in my car this am and as I drove off I see "sys" flashing in the digital cluster. What does this mean and how serious?

Backstory: notice has never come on before. But Sunday night I left the interior light on and Tuesday go to start it and the battery is beyond dead. Jump the car, starts right up. Let it charge a bit and then shut it off. Get in this am, battery a little weak but starts. I drive off and everything seems to be working fine other than the "sys" notice. So I have to believe it's tied to the battery getting drained.

Any insight appreciated.

[GOLDCYLON]

The battery has an internal short. You will see this just before your battery dies however make sure your battery is fully charged first. The only other explanation is after an aftermarket radio install which yours is not. However plan on buying a new battery. If you continue to see this message after you have fully charged the battery.. then trust me new battery time. GC

[vilant]

Someone correct me if I'm wrong but, I'm pretty sure the "SYS" light will flash when the CCM has detected a problem. I bet you have a code set. You can manually retrieve the code and reset or hook it up to a scanner.:cheers:

[92whiteZ]

Thank you. Load off my mind. It's an acdelco battery. ..maybe original but doubt it. No aftermarket radio or components. Battery replacement is something that won't keep me up at night.

[GOLDCYLON]

Someone correct me if I'm wrong but, I'm pretty sure the "SYS" light will flash when the CCM has detected a problem. I bet you have a code set. You can manually retrieve the code and reset or hook it up to a scanner.:cheers:


A "SYS" code is 99.99% of the time a warning just before the battery craps out.

[92whiteZ]

I have an otc genesis scanner. Seems to work "ok" in communicating with the car. It Def won't clear my ltpmd light. But I will hook it up and see if it reads any codes.

[GOLDCYLON]

Thank you. Load off my mind. It's an acdelco battery. ..maybe original but doubt it. No aftermarket radio or components. Battery replacement is something that won't keep me up at night.

Go Boldy ;)

[GOLDCYLON]

I have an occasional get genesis scanner. Seems to work "ok" in communicating with the car. It Def won't clear my ltpmd light. But I will hook it up and see if it reads any codes.


Pull the bulb in the DIC and that light will go away. Or repair or replace the defective bands :cheers:

[vilant]

A "SYS" code is 99.99% of the time a warning just before the battery craps out.

Ahh, did not know that. I was quoting the '90 owner's manual. Thx:cheers:

[92whiteZ]

GC was 100% correct. got into it after my breakfast meeting - "sys" light gone. I have to think since I didn't drive it after jumping it and letting idle/charge it was prob still reading a very low charge. But after driving it to my office - no "sys" message at all and things be well. Good to know for next time.

This board/group is the most impressive collection of people and knowledge I have personally come across in any specialty car environment. Makes owning cars like this much more enjoyable and a little less scary.

Thanks everyone

[92whiteZ]

Pull the bulb in the DIC and that light will go away. Or repair or replace the defective bands :cheers:

I am trying to figure out which bands will fit my 18" Shelbys. Once I do I plan to pull the sensors from the original wheels and slap them on. def prefer things to be working.

but thanks for the tips

[RyanChappel]

(not too different from being a 'push and polisher' when I hung around IndyCars for a couple of years in the late '90's), I agree with you wholeheartedly..this board has the most generous and helpful group of posters I have ever encountered. I would not dare try to keep my Z without this source available...Thanks everyone..!

[Paul Workman]

Just an FYI, but relying on the alt to recharge a dead battery is like playing Russian Roulette. Bringing a severely discharged battery (or worse, one with a dead cell!) back up with the alternator is taking a chance of cooking the diode pack/regulator in the alternator.

Recommend you pick up a smart charger; capable of 20-40 Ampers, as well as other features, e.g., detecting a bad cell, will desulfate a battery, etc., cheaper than a replacement alternator!

Just sayin...

P.

[GOLDCYLON]

Just an FYI, but relying on the alt to recharge a dead battery is like playing Russian Roulette. Bringing a severely discharged battery (or worse, one with a dead cell!) back up with the alternator is taking a chance of cooking the diode pack/regulator in the alternator.

Recommend you pick up a smart charger; capable of 20-40 Ampers, as well as other features, e.g., detecting a bad cell, will desulfate a battery, etc., cheaper than a replacement alternator!

Just sayin...

P.

Yep I use the Battery tender all the time just as a float charger and maintainer

The C4 is a battery power hog. It wants 12.69 Volts all the time or wierd stuff can really happen,,, youd think the car was possessed