What does fail safe engine mode mean on your 2000 S Type Jaguar The car was running beautifully and then out of the blue it went into limp home mode Any answers?

Answer fail safe mode is something the vehicle computer will go into when there is a problem with the vehicle it allows you to get off the highway or road safely you need to take vehicle to repair shop or your dealer which ever you prefer Failsafe engine mode on a 2000 jaguar s type is caused by a stopped up throttle body. Jaguar says not to clean the throttle body since it has a protective coating to help keep deposits from accumulating. You can clean the throttle body as long as you use ONLY throttle body cleaner that states it is safe to use with a protective coating.

The butterfly valve in the throttle body will actually stick not allowing air to flow into the manifold causing failsafe engine mode to kick in reducing the amount of power your engine will produce. To solve the issue just clean out your throttle body, it will cost you around $5 dollars and take 1 hour of your time Potential Answer Limp mode initiates when the enginbe computer(s) note a problem that can cause serious damage to the engine or electricsl components. The car engages limp mode and will not go into higher gers as a protective measure My Mercedes SLK230 did the same thing; the dealer tested the car and told me there was nothing that could be done and that I should sell the car ASAP.

I took the car home, opened up the computer under the passenger side floor board and found that the male-female connectors were not completely seated (some days the car drove well and other times I would have this problem, which almost resulted in several accidents on the highway). I pushed in the computer connectors and the car has been great ever since (2 years now). Therefore, check your computgers to see if you have a loos connection(s) hope this helps.

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