911uk

brake pressure warning light

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

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Discussion summary

YOUR RESEARCHbrake pressure warning light

Leading reported evidence

Replace pads; the other is the brake fluid level warning

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No successful repair reported for this finding.

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Unsuccessful attempts: 1
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Suggestion
There are at least 2 brake warning lights on a 993 - one is for the wear sensors telling you to replace the pads; the other is the brake fluid level warning.
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brake pressure warning light

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Leading evidence: 'Replace pads; the other is the brake fluid level warning' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace pads; the other is the brake fluid level warning' (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.

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Replace relatively cheaply

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
If the pads are not nearing replacement, it could be the pad wear sensors are faulty - these are separate from the pads and, if it's not just a loose connection etc., can be replaced relatively cheaply.
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brake pressure warning light

Frequently discussed actions (2)

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Replace pads; the other is the brake fluid level warning

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
There are at least 2 brake warning lights on a 993 - one is for the wear sensors telling you to replace the pads; the other is the brake fluid level warning.
Original post Read captured discussion
brake pressure warning light

Replace relatively cheaply

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
If the pads are not nearing replacement, it could be the pad wear sensors are faulty - these are separate from the pads and, if it's not just a loose connection etc., can be replaced relatively cheaply.
Original post Read captured discussion
brake pressure warning light

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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.

3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

911uk: 1 discussions

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Generation: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Occasionally the brake pressure warning light does not switch off after firing up the engine - switching engine off and on again fixes it. At other times it switches off after what seems a long wait (long enough to lose patience and start driving anyway - the manual states that you should not drive with this light lit). There does not seem to be any problem with the brakes - even after half an hour driving with the light on. Any thoughts on what could be causing this ? (It is on a '95 993 C4 convertible). Migration info. Legacy thread was 14936

POST 2Original post

There are at least 2 brake warning lights on a 993 - one is for the wear sensors telling you to replace the pads; the other is the brake fluid level warning. I had an intermittent brake fluid warning and it was simply that the level was a little low; so braking/cornering would throw the sensor. If the pads are not nearing replacement, it could be the pad wear sensors are faulty - these are separate from the pads and, if it's not just a loose connection etc., can be replaced relatively cheaply. Migration info. Legacy thread was 14939

POST 3Original post

Brake pressure... It seems from your description we are talking brake pressure, (not fluid or pads)which also linked to 4 wheel drive system. As nothing has stopped working its unlikely you have too serious a problem. And there is nothing you can do yourself either. You must take it to a Porsche dealer (OPC) or a Specialist (only if they have the correct Bosch computer for 993 C4) who can plug it into there computer to find out whats happening. Its the quickest and most economic way. Safest too. Dont dilly dally with your stoppers. Adrian Crawford. www.911secrets.com www.performance2and4.co.uk Migration info. Legacy thread was 14940

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