Power back door stopped, Check Hybrid System, Check Brake system !! RX450 2010

[Dave450h]

Hello,

Yesterday, my boot wouldn't open (auto or manual),  today after driving about 30 miles the Check Hybrid System warning came on so I decided to drive home, a couple of times when breaking on the return trip the TRC light came on and Check Brake System message was displayed.

Obviously I have a lot of investigating to do, reading past posts etc. to decide what to do next, but if anyone can advise me in the mean-time I would appreciate it.

I have owned the car for about two years and done 30k miles (now at 100k). I replaced the 12v Battery about 18 months ago will go off now and check it's state, although I haven't noticed any other signs of a weakening Battery.

Thanks

Dave

 

 

 

 

 

 

 

 

[Dave450h]

I was reading the recent rear door thread lock and decided to check the 12v Battery.

It was charged at 13.5V and is only 12-18 months old, so looks OK, however it was sitting in about 5mm of water. Not sure where it came from but I assume the door seal. I disconnected the Battery and dried it all up.

Upon restarting the car, the check engine error is no longer displaying but the boot wont unlock, I have to open it from inside.

I have to time to test drive today but will again tomorrow

 

 

 

[rassel_2003]

I have rx400h after replacing Battery had similar problems, i have to plug in Autel Mk808 and clear all the errors - no probs after that.

[Dave450h]

I took the car for a short drive over twisty & steep terrain, the Hybrid system check and Brake system check messages did not reappear and the battery-engine graphics are all working as they should.

I will just have to carry on hoping it doesn't reappear 

Dave

 

 

 

 

 

[Russell Wheeler]

Plenty of threads about water leaks, and how if it gets too bad, it can be game over. Because the boot trays hide the floor of the boot, water can be collecting near the hybrid Battery.

[Irishman]

Lock the car using the key at the drivers door, remove key wait a few seconds then open the car with the key, leave the key in the lock for a couple of seconds then turn it again to open the already open car. Your rear door should now be working.

[Dave450h]

Hi took the car to Lexus Cheltenham and for the 'Check Hybrid System' error they diagnosed a faulty hybrid system pump. It was replaced quickly and everything works as it should. Unfortunately the bill was £1200.

The power back door is still broken, just working out what the best thing to do is, try to get a cheaper unit from abroad and fit it myself or pay the £1500 for the dealer to replace it!