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JAGUAR S-Type - S-Type Warning Lights

Q
I recently purchased a 2004 S-TYPE from the Netherlands Embassy in Harare, Zimbabwe. According to the Embassy's records it was last serviced by Jaguar Centurion (close to Johannesburg in South Africa) at 30,639kms. Since then, the engine malfunction warning light has come on along with the airbag warning light. The dealer assured the Embassy that there was nothing seriously wrong as the car had been thoroughly checked over and that it would remedy the problem when the car was next in South Africa. What I would like to know is that if the illumination of these warning lights is not serious, can they be cancelled here in Harare rather than have to drive the car back to South Africa to remedy the problem? I have also discovered that the horn, using the centre pad on the steering wheel, does not operate. However, the horn itself appears to be in order as it operates if the vehicle alarm system is activated. Could the horn failure be related to the airbag located in the centre of the steering wheel - hence the reason why the airbag warning light is illuminated? If so how do you remove the steering wheel centre pad to check that the wiring is properly connected? I also have several other concerns:

1) The oil specification is for a 5W30 viscosity meeting Jaguar specification WSS M2 C913 A or B preferred. We don't have those oils in Zimbabwe. Would Castrol GTX 20W50, which meets API SG/CD specifications, be an acceptable alternative?

2) The coolant (antifreeze) WSSM97B44 coloured orange is not available here. Could I use a mono-ethylene glycol based non-calcium carbonate (green) coolant?

3) Brake fluid: What we have here is Dot 4 SAE J-1703 FMVSS116 specification. Is that suitable?

4) Plug-in accessories: I have an upmarket compressor to enable me to check tyre pressures which is designed with crocodile clips to attach it to the battery. According to the owner's handbook, 'under no circumstances must the power supply be obtained directly from either battery terminal.' Can I use this compressor on my car and, if so, how?

5) With the car, I obtained a Snap-on Diagnostic Kit FESCGB402C00. It is brand new, but appears to be missing the Adaptor DL16. Is it necessary? If so, are these available? Where does it plug in? I have the CD-ROM manual but it doesn't tell me where the adaptor fits, or what it does.

A
It sounds to us as though there are still issues within the steering wheel, but the only way to confirm this would be with a diagnostic scanner; we are not familiar with the Snap-On type you mention and would advise you contact its South Africa office on +27 (0) 317 191 600 or via This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
All S-TYPEs are fitted with an OBDII diagnostic connector plug located under the dash adjacent to the centre console, and there are several low cost PC-based scan tools available to read and clear codes; we have recently tested the AutoEngiuity system (www.gendan.co.uk).
As to the correct oil, the actual brand is of far less importance than using the right viscosity, which in this case must be a 5W30. Glycol based coolant must never be used in these cars, but the red Ford type will be compatible, though for brake fluid any Dot 4 should be adequate. While discouraged by manufacturers it is still possible to connect compressors, chargers, etc, directly to the battery, but do remember that even the tiniest short can cause substantial damage to the circuitry, so where possible try to use a slave battery or independent 12v supply.

 
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