Multiple warning messages
Thread Starter
Rookie
Joined: Sep 2017
Posts: 38
Likes: 3
From: SANJOSE
Multiple warning messages
Hi all !
Yesterday I had a "check fuel cap" message that popped up and went away. Which I did check, everything seemed ok. This morning a "Secondary Collision Break system Malfunction" and a "AWD System Malfunction 2WD Mode Engaged" message popped up along with the yellow check engine light.
Has any one else experienced this, and how was the situation remedied?
Car has about 60k km on it and it has been some what cold here -3 on some days. I live 1600km away from the nearest Lexus dealership. Thanks everyone.
Yesterday I had a "check fuel cap" message that popped up and went away. Which I did check, everything seemed ok. This morning a "Secondary Collision Break system Malfunction" and a "AWD System Malfunction 2WD Mode Engaged" message popped up along with the yellow check engine light.
Has any one else experienced this, and how was the situation remedied?
Car has about 60k km on it and it has been some what cold here -3 on some days. I live 1600km away from the nearest Lexus dealership. Thanks everyone.
Intermediate
Joined: Sep 2015
Posts: 334
Likes: 209
From: NV
When the check engine light is on, the support systems (collision mitigation and auto AWD) will be temporarily unavailable.
The "Check Gas Cap" message was an early warning indication of an evaporative emissions system leak. Recheck the fuel cap seal. After the problem is corrected, the check engine light should no longer be on after two days of driving.
The "Check Gas Cap" message was an early warning indication of an evaporative emissions system leak. Recheck the fuel cap seal. After the problem is corrected, the check engine light should no longer be on after two days of driving.
CL Community Team
Joined: May 2005
Posts: 7,230
Likes: 1,746
From: VA
Also check your 12 volt battery as when they begin to fail and have lower voltage it will trigger many apparently random warning lights and codes because everything is very sensitive to low voltage. Batteries are very sensitive to cold weather and that is often what it takes to make them fail. Your recent cold weather is a great indicator tthat it is likely your old battery. Note that even if somewhat new that any battery can fail at any time.
Last edited by Clutchless; Mar 22, 2026 at 09:01 AM.
Racer
Joined: Nov 2017
Posts: 1,942
Likes: 581
From: New York
Hi all !
Yesterday I had a "check fuel cap" message that popped up and went away. Which I did check, everything seemed ok. This morning a "Secondary Collision Break system Malfunction" and a "AWD System Malfunction 2WD Mode Engaged" message popped up along with the yellow check engine light.
Has any one else experienced this, and how was the situation remedied?
Car has about 60k km on it and it has been some what cold here -3 on some days. I live 1600km away from the nearest Lexus dealership. Thanks everyone.
Yesterday I had a "check fuel cap" message that popped up and went away. Which I did check, everything seemed ok. This morning a "Secondary Collision Break system Malfunction" and a "AWD System Malfunction 2WD Mode Engaged" message popped up along with the yellow check engine light.
Has any one else experienced this, and how was the situation remedied?
Car has about 60k km on it and it has been some what cold here -3 on some days. I live 1600km away from the nearest Lexus dealership. Thanks everyone.
Racer
Joined: Jun 2009
Posts: 1,856
Likes: 220
From: PA
Also check your 12 volt battery as when they begin to fail and have lower voltage it will trigger many apparently random warning lights and codes because everything is very sensitive to low voltage. Batteries are very sensitive to cold weather and that is often what it takes to make them fail. Your recent cold weather is a great indicator tthat it is likely your old battery. Note that even if somewhat new that any battery can fail at any time.
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