5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant Warning
Leading reported evidence
Check coolant level
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'Check coolant level' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant level' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Check coolant level" warning message and the red light
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
About 30 seconds after subsequent restart I got a "Check coolant level" warning message and the red light to the right of the 250 degree mark began flashing.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Problem is in engine compartment temp circuit .;; check deck lid fan for obstruction and proper operation.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Leave low coolant switch disconnected, and disconnect UAOS harness and leave dissconnected .
Check coolant level" warning message and the red light
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
About 30 seconds after subsequent restart I got a "Check coolant level" warning message and the red light to the right of the 250 degree mark began flashing.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T150039Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Took my 03 4s out for a drive. Went 30+ miles, parked for an hour, drove another 30+ miles and then stopped at another store for 30 minutes. About 30 seconds after subsequent restart I got a "Check coolant level" warning message and the red light to the right of the 250 degree mark began flashing. Temp gauge needle however was pointed straight at 180 degrees as always. Stopped the car and checked the coolant tank and everything looked normal, no unusual smells, and previous parking space showed no signs of any leaked fluids. Decided to trust the temp gauge and try to drive 10 miles home. Red warning light next to 250 degree mark kept flashing for about 5 minutes and then stopped. Needle never deviated from 180 degree mark.
Could this be an early sign of a coolant sensor failure? Which sensors actually monitor coolant level vs coolant temps? Has this happened to anyone else? Thanks in advance for any suggestions.
For those with a "
slow flash
" warning (one per second) , it can be caused by several things.
1. low coolant switch ; if the coolant is low by only a few ounces, the slow flash may come on intermittently at times.
2. engine compartment temp:: if the engine compartment temp gets above 185F, the slow flash will activate. If the temp sensor (located in intake manifold between #5-6 runner in rubber grommet) is dislocated and fell on top of engine it will slow flash, of if the engine lid fan is inop.
3 UAOS Sensor :: If equipped with UAOS, the slow flash will activate if the accumulation reaches 120CC .( drain accumulator, unless you have the high-mileage/Extreme Track Duty Auto Drain).
When diagnosing the "slow flash" always start with the obvious.
Level 1 diagnosis ;;
a.Check the coolant level,
b.check the temp sensor mounting,
c. drain the accumulator (if UAOS equipped NOTE:: not necessary you have the high-mileage/Extreme Track Duty Auto Drain)
Level 2 diagnosis
a. disconnect the low coolant switch at the bottom of reservoir and leave unplugged and road test. Results: if slow flash stays off , problem is in the low coolant switch, if slow flash remains, continue to (b).
b. Leave low coolant switch disconnected, and disconnect UAOS harness and leave dissconnected . result: if slow flash stays off , problem is in the UAOS harness/sensor, if slow flash remains, continue to (c).
c. Problem is in engine compartment temp circuit .;; check deck lid fan for obstruction and proper operation.
Level 3 diagnosis; this requires wiring diagrams, a DVOM, a good skill level and understanding of Automotive systems.
a, test low coolant circuit
b.test engine compartment temp circuit
c. test UAOS sensor./harness
UPDATE:
After letting the car sit for 36 hours my coolant tank was showing slightly below the min level so I added fluid. Upon restart I continued to get the warning message and flashing red light. Drove over to my Indy and he successfully drained fluid out of the UAOS accumulator and ALL IS GOOD!!! Thanks Skip!!
This is a source reference. Confirm exact model applicability in the original material.
