Question about Lexus Cars & Trucks
Can the coolant reservoir be removed?
Yes , you will need to disconnect the hose running between your coolant reservoir and radiator. As far as leaving it off and operating the vehicle it is not recommended by the manufacturer.
Posted on Oct 12, 2013
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Posted on Jan 02, 2017
that is so easy unhooked connector plug,unhook hose,loosen three bolts take off coolant reservoir.
New sensor comes with reservoir
Posted on Jan 09, 2010
Testimonial: "thank lots of help"
The cap on the surge tank is a screw type fitting, so yours must be stuck or jammed.
Try to remove it if you can and replace with a new cap.
The cap may not be holding pressure so this will cause overheating.
And here is another thing to consider:-
The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.
Posted on May 30, 2010
Testimonial: "Since I posed the question, the car has had 2 visits to the garage because of serious overheating. What you have described is what we, with fingers crossed, found to be the case. All seems to be back on track but we required addition of nearly 2 gallons of coolant. Thank you. "
SOURCE: i WANT TO KNOW HOW
Are you talking the expansion tank? If so - Drain coolant first by going underneath the car and take off the protective shield and unscrewing the blue plastic screw (make sure the car is NOT hot!), under the reservoir you'll see an electronic sensor - carefully twist is a 1/4 turn counterclockwise and gently pull downward to remove this sensor don't force it, you don't want to pay $150 to replace it. Disconnect the hoses on the top and bottom of expansion tank by pulling up the metal tabs upwards then pulling the hose away from the tank. I believe there are two or three screws which hold the expansion tank bracket in place, unscrew these and pull the bottom of the tank away from the radiator then lift upwards on the bracket (the bracket and expansion tank should then come out). Get the old expansion tank off the bracket and replace. You want to take off the bracket because getting a new tank on the bracket is a B*TCH!
Reconnect in reverse order.
Make sure to bleed the cooling system properly to remove air pockets (please use BMW coolant and distilled H20 in 50/50 mix - it's not the same as your Prestone or other mass produced coolants). Last replace the expansion tank cap because that might have created the expansion tank cracking.
Good luck and hope this helps
Posted on Dec 31, 2010
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