Alternator/generator/regulator problems of the 2008 Toyota Yaris

I drive a Toyota 2008 Yaris (Toyota vios here in d philppines)with a little more than 20,000 kms(20,014kms) on d odometer. I noticed an intermittent noise on d front end suspension passenger side. I brought to d dealer for an assessment of the problem, after their assessment Toyota told me that there was a problem with the shock absorber and they would replace it. They also said that there was also a problem with the alternator saying that the voltage "isn't up to standard. " after a few days I got my vehicle back from Toyota. They told me that they replaced the front right shock absorber. I asked them why only one shock absorber was replaced as the usual procedure was that both front shock absorbers should be replaced, the service adviser told that Toyota is becoming more strict with warranty policies and the only part that they will replace is the defective part. Furthermore the dealer service advisor said if it was up to them they normally always replace both shock absorbers but because of Toyota's strict warranty policy they could only replace one shock absorber. This seems to be another instance of Toyota cutting corners to save cost at the expense of car safety. I live in manila, philippines and I know that this case of mine isn't in your jurisdiction, I only submit my case to you because I'm concerned that there may Yarises there in the us that may have similar problems. Thank you for your time in reading my incident report.

12/21/09 - abs light and brake light came on. Car difficult to brake and making sprung "spring" type noises. Rear wheel sensor and wire harness had gone bad - replaced and went out again on 1/25/11. 6/8/10 car making funny whirling noises under hood. Alternator went bad.