justin

The Radio code can be programmed in advance, but the default is off. e-mail me if you want the details on how to set the code. Best regards Justin.

Second Attachment

First Attachment

Firstly, you need to have experience of surface-mount technology? If not I suggest you don't touch the radio. Secondly, do you know how to remove the radio from the dash? Again if you are not sure seek professional advice. Now that that's over I've attached two drawings from the Pioneer manual. The two capacitors to remove are C101 and C102 on the Tuner PC board. both are of 0.056mfd and are chip capacitors that shunt the junctions of R101/102 and Q101 and Q102 to earth. They are fairly easy to locate, just follow pins 25 and 26 from connector U21 (in the middle of the board layout) through R101 and R102 and the two capacitors shunt signal to ground on the base of Q101 and Q102. This is a totally unofficial modification, you carry it out at your risk. Roughly the time constant of 2.2K ohms and .056mfd is: 123 microseconds, the correct UK FM de-emphasis time constant should be 50 microseconds, however this is already accomplished by C151/R151 and C152/R152 on the Tuner PCB (3.3K and .018mfd = 59 microseconds minus a bit for source impedance from the previous stage is probably the correct value of 50 microseconds) I reckon they mis-specified C101/102 they should be more like 560pf. Best regards, Justin.

Pete, If you are looking for a MK-1 GS-300 and not in a hurry I have a super Regent Green/Devonshire. I'm going to be selling it in a few months time for an LS-400 MK4 It's a 96/P 107K miles but the condition is of a 2 year old car, it's never had an accident, has FLSH (I mean full + all bills, even tyres, MOT's etc). I had it resprayed by Lexus 2 years ago. (cost £3.5K) Justin.

Thanks for the replies...... I'd love to know if it is possible to retro-fit, though I must say the GS300 has very good traction in the first place. Now, why did Lexus leave off this feature in the UK? I have one idea.... the first generation LS400 (and I also think the GS300) catalogues all claimed that the cards had Limited Slip Diff, they did not of course, perhaps this option was deleted at the last minute? I wonder when the spec was drawn and LSD was dropped, but the TRC was not re-instated by marketing. I am assuming a technical incompatibility with the TRC and LSD at the same time..... A couple more questions.... 1. Why do the GS/LS card of this vintage only have one rear tail light per side when the US versions have two in both sections of the red lens? Type approval perhaps, but why? The US rear lighting is much better. 2. Why delete the rear side markers for the European market? Volvos have them. 3. Have you noticed that the speedometer over reads by about 9%. If you work out the circumference of the standard fit tyres in the USA the difference works out to be 9%! i.e. the US cars have correct reading speedometers... Now there is a EU type approval requirement that a Speedometer always over reads, to save re-engineering the Speedo gearing perhaps Lexus just changed the tyre size??? Who knows? PS anyone know how to change the Celsius temp display for Fahrenheit? (I'm anti-euro and prefer things British imperial!!!)

Pete, look in your Owners manual (page 113).... The LHD (European) version of the GS300 MK1 seems to have TRC, but not the UK RHD version.... why? I would bet you could just add the switch as it's all part of the ABS system...... Anyone know the answer to this? Justin.